AC, Fridge, Fan & Heating Cost Calculators

See what cooling, heating and refrigeration may add to your electricity bill.

Important: Imported examples, country tariff defaults, fuel prices and savings claims are illustrative and may be outdated or not applicable to you. Enter current local rates and equipment data; actual bills can include slabs, taxes and fixed charges. Regional content is retained for reference and is not a verified tariff or guarantee.

Compare running costs for air conditioners, refrigerators, fans and heaters. Actual electricity use depends on thermostat cycles, climate, equipment efficiency and your tariff; a product energy label or meter can improve the estimate.

How to estimate a fridge electricity bill from its BEE label

Find the annual energy consumption in kWh/year on your refrigerator’s label. Divide it by 12 for average monthly units, then multiply by your electricity rate per unit. One unit is one kWh. Choose the annual-energy mode in the India fridge running cost calculator and enter your own label and tariff values.

The label figure is a standard-test estimate, not a meter reading. Room temperature, door openings and settings affect real use, while slab rates, fixed charges and taxes can make the billed cost different. Do not apply compressor duty cycle to annual label consumption a second time.

Refrigerator electricity cost from annual kWh or duty cycle

For an appliance label with an annual energy estimate, multiply annual kWh by your electricity rate per kWh to estimate yearly energy cost; divide by 12 for an average month. If you instead know measured daily kWh, multiply by the number of days and your tariff.

When using compressor watts, use connected hours and an estimated duty cycle to account for cycling: daily kWh = watts × hours × duty fraction ÷ 1,000. An annual label or measured energy figure already reflects cycling, so do not apply a duty adjustment again. Labels are estimates and actual use depends on conditions, defrosting and equipment.

Open the fridge running-cost calculator and enter your own energy use and tariff. Flat-rate estimates do not account for electricity slabs, fixed fees or taxes.

Choose a calculator

Air Conditioner Running Cost Calculator

Air Conditioner Running Cost Calculator

Work out exactly what your air conditioner costs to run per hour, per night, per month and per year. Pick your AC size or type its wattage, set how long it runs and enter your electricity tariff — the calculator converts watts to units (kWh) and prices them instantly.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

Worked example

A 1.5 ton inverter split rated at 1,400 W, running 8 hours a night: 1,400 ÷ 1000 × 8 = 11.2 kWh a night. At $0.17/kWh that is $1.90 a night, about $57 a month and roughly $228 across a four-month summer. Drop the duty cycle to 70% (realistic for an inverter in a shaded room) and the same AC costs about $40 a month.

Typical air conditioner power draw

Unit typeTypical running wattskWh per 8-hour night
0.75 ton / 9,000 BTU inverter split600 – 800 W4.8 – 6.4
1.0 ton / 12,000 BTU inverter split800 – 1,000 W6.4 – 8.0
1.5 ton / 18,000 BTU inverter split1,200 – 1,600 W9.6 – 12.8
1.5 ton non-inverter split1,700 – 2,000 W13.6 – 16.0
2.0 ton / 24,000 BTU split2,000 – 2,400 W16.0 – 19.2
Window AC 1.5 ton1,500 – 1,800 W12.0 – 14.4
Portable AC1,000 – 1,400 W8.0 – 11.2
Central AC, 3 ton3,000 – 4,000 W24.0 – 32.0

Six ways to cut your AC running cost

  • Raise the setpoint by 1 °C. Every degree warmer typically trims 3–6% off compressor energy, and 24 °C is still comfortable for sleeping.
  • Clean or replace filters monthly in season. A clogged filter forces longer compressor runtime for the same cooling and is the cheapest fix on this list.
  • Run a ceiling fan with the AC. A 50 W fan lets you sit comfortably 2 °C warmer, which usually saves far more than the fan costs.
  • Seal the room. Door gaps, open curtains on a sunny wall and unsealed window frames can add 20% or more to runtime.
  • Use the sleep or eco timer. Cooling load drops after midnight, so a schedule that raises the setpoint at 1 am usually goes unnoticed.
  • Service the outdoor coil once a year. A dusty condenser raises head pressure and pushes the compressor into a higher-power operating point.

Frequently asked questions

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is it cheaper to leave the AC on all day or switch it on when needed?

For almost every household it is cheaper to switch it off. A cool empty room slowly leaks heat to the outside all day, and you pay for every joule of that leak. The exception is a very well insulated space with an inverter unit and a short absence, where the pull-down cost can exceed the idle cost.

What is the duty cycle field for?

Nameplate wattage is the draw at full load. Over a real night the compressor cycles, so the average is lower. Setting the duty cycle to 70% multiplies the result by 0.7 and gives a far more realistic monthly estimate than the nameplate figure alone.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

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Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Air Conditioner Running Cost Calculator — the UAE

Estimate air conditioner costs in the UAE with prices in AED. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and AED 108.00 for 30 days at AED 0.3/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000AED 54.00
75%9.000AED 81.00
100%12.000AED 108.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When air conditioner costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in the UAE — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

Air Conditioner Running Cost Calculator — Australia

Estimate air conditioner costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Australia

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and A$118.80 for 30 days at A$0.33/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000A$59.40
75%9.000A$89.10
100%12.000A$118.80

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When air conditioner costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in Australia — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

CA regional edition

Air Conditioner Running Cost Calculator — Canada

Estimate air conditioner costs in Canada with prices in CAD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The C$0.19/kWh starting value is an illustrative input, not a verified live Canada average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Canada

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and C$68.40 for 30 days at C$0.19/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000C$34.20
75%9.000C$51.30
100%12.000C$68.40

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in Canada

Canadian electricity is comparatively cheap, averaging around 19 cents per kWh, but the structure differs sharply by province. Quebec, Manitoba and British Columbia benefit from abundant hydro and sit well below the national average. Ontario uses mandatory time-of-use pricing with on-peak, mid-peak and off-peak windows that shift between summer and winter schedules, and also offers an optional tiered plan. Most provinces add a fixed monthly service charge on top of the per-kWh energy charge.

When air conditioner costs peak in Canada

Winter dominates in most of Canada, with December through February bringing the highest bills wherever heating is electric. Homes on natural gas heat see a much flatter annual profile, with a modest summer bump from air conditioning.

Local tip. In Ontario, shifting laundry and dishwashing to after 7pm on weekdays — or any time at weekends, when the entire day is off-peak — moves that consumption to roughly half the on-peak rate at no cost to you.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.12 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in Canada — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the Canada starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest hydro bill.

EU regional edition

Air Conditioner Running Cost Calculator — the Eurozone

Estimate air conditioner costs in the eurozone with prices in EUR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The €0.285/kWh starting value is an illustrative input, not a verified live Eurozone average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Eurozone

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and €102.60 for 30 days at €0.285/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000€51.30
75%9.000€76.95
100%12.000€102.60

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the Eurozone

Eurozone electricity averages around €0.285 per kWh but the variation between member states is large — Germany and Denmark sit well above the average while France, helped by its nuclear fleet, sits below it. Bills typically combine an energy charge, a network or grid fee, and a substantial tax and levy component that in several countries exceeds the cost of the energy itself. Many suppliers offer day/night or dynamic hourly pricing, and dynamic tariffs linked to the wholesale spot market have become widely available.

When air conditioner costs peak in the Eurozone

Winter drives the peak in most of the eurozone, particularly in countries with significant electric heating. Southern member states such as Spain, Italy and Greece increasingly see a comparable summer peak from air conditioning.

Local tip. Check how much of your bill is energy and how much is network fees and taxes. In several member states the non-energy component is more than half the total, which means using less electricity saves less than the headline rate suggests.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.251 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in the Eurozone — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the Europe starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

IN regional edition

Air Conditioner Running Cost Calculator — India

Use this AC electricity bill calculator for India to estimate units and rupees for a 1-ton, 1.5-ton or 2-ton AC. Select a preset or enter actual watts, then set compressor duty and your marginal DISCOM slab rate. Tonnage is cooling capacity, not electrical consumption.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and ₹2,880.00 for 30 days at ₹8/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000₹1,440.00
75%9.000₹2,160.00
100%12.000₹2,880.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When air conditioner costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in India — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

UK regional edition

Air Conditioner Running Cost Calculator UK

Work out how much air conditioning costs to run in the UK per hour, night and month. Use a portable or split-AC preset, or enter measured watts. Cooling capacity in BTU is not electrical input power; use compressor duty to model cycling.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The £0.2611/kWh starting rate is the Jul–Sep 2026 Great Britain standard-variable Direct Debit average, including 5% VAT. It does not cover every UK tariff or Northern Ireland. The 57.19p daily standing charge is excluded from appliance costs. Ofgem source [5], checked 7 September 2026. Replace it with your own rate; this reference period ends 30 September 2026.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United Kingdom

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and £94.00 for 30 days at £0.2611/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000£47.00
75%9.000£70.50
100%12.000£94.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the United Kingdom

An electricity bill separates variable kWh charges from a fixed standing charge. For the July-September 2026 period the Ofgem Great Britain Direct Debit standard-variable reference is 26.11p/kWh plus 57.19p/day, including 5% VAT. It applies as an average reference across England, Scotland and Wales, not to every UK household or Northern Ireland. Your own supplier, region, payment method or fixed-rate plan can differ. With a time-of-use plan, price each charging or appliance session using the rate in that window.

When air conditioner costs peak in the United Kingdom

UK electricity costs rise through the winter, peaking in December and January when lighting hours are longest and any electric heating is working hardest. Air conditioning is rare enough that summer is generally the cheapest quarter.

Local tip. Use your bill’s variable price per kWh when estimating an extra appliance. Do not add a standing charge to each device, or add VAT again if it is included. An off-peak EV rate can come with different daytime pricing; compare the whole household bill.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.207 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in the United Kingdom — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the UK starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

US regional edition

Air Conditioner Running Cost Calculator — the United States

Estimate air conditioner costs in the US with prices in USD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United States

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and $61.20 for 30 days at $0.17/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000$30.60
75%9.000$45.90
100%12.000$61.20

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the United States

Most US households are billed a flat per-kWh rate plus a fixed monthly customer charge of roughly $8 to $15. Rates vary enormously by state — Hawaii runs above 50¢/kWh while Idaho and Utah sit near 12–13¢. Many utilities now offer optional time-of-use plans where afternoon and early-evening power costs substantially more than overnight power, and a growing number of states are making time-of-use the default for new connections. Some utilities also apply seasonal rates, with summer kWh priced higher than winter to reflect air-conditioning demand.

When air conditioner costs peak in the United States

Costs peak in July and August across most of the country, when cooling load is highest and many utilities switch to summer pricing at the same time. In the Northeast and Upper Midwest a second, smaller peak appears in January and February wherever homes use electric resistance heating or heat pumps.

Local tip. Check whether your utility offers a time-of-use plan before you assume a flat rate. If you can move laundry, dishwashing and EV charging to overnight hours, the off-peak rate is frequently less than half the on-peak rate and the switch costs nothing.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.371 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in the United States — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the US starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest utility bill.

ZA regional edition

Air Conditioner Running Cost Calculator — South Africa

Estimate air conditioner costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Air Conditioner Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

The starting example uses 1,500 W for 8 hours/day at 100% duty. That is 12 kWh/day and R1,044.00 for 30 days at R2.9/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%6.000R522.00
75%9.000R783.00
100%12.000R1,044.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When air conditioner costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Units used (kWh) = Power in watts ÷ 1000 × Hours run
Cost = Units used × Your tariff per kWh
Monthly cost = Cost per day × Days you run it that month

Compressors cycle on and off once the room reaches the set temperature, so a well-insulated room may draw only 50–70% of the nameplate wattage over a long session. Use the duty-cycle field to model that instead of guessing.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Air Conditioner costs in South Africa — FAQ

How much does it cost to run an air conditioner for 8 hours?

For a typical 1.5 ton inverter split drawing about 1,400 W, eight hours uses roughly 11.2 kWh. That is about $1.90 in the US, £2.77 in the UK, ₹90 in India or A$3.70 in Australia at average 2026 tariffs. Enter your own wattage and tariff above for an exact figure.

How many units does a 1.5 ton AC use per hour?

A 1.5 ton non-inverter split typically uses 1.7–2.0 units (kWh) per hour at full load. A modern inverter model of the same capacity uses about 1.2–1.6 units per hour at full load and considerably less once the room is at temperature, because the compressor throttles down instead of switching off and on.

Does an inverter AC really save money?

Yes, when it runs for long sessions. An inverter compressor modulates its speed and settles at a lower steady draw, which typically cuts consumption 20–40% versus a fixed-speed unit over a full night. For short 30-minute bursts the saving is much smaller because the unit spends most of that time pulling down the room temperature at full power.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Fridge and Freezer Running Cost Calculator

Fridge and Freezer Running Cost Calculator

How much does it cost to run a fridge freezer? Enter the annual kWh from its energy label or your measured daily use. See the electricity cost per day, average month and year for a fridge, chest freezer or mini fridge at your own tariff.

Quick answer. The quickest method is annual label kWh × electricity price per kWh. A 400 kWh/year example costs $68/year at $0.17/kWh. Label and measured-kWh modes already include compressor cycling—do not discount them again.

Calculate with your numbers ↓

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in United States?

A fridge-freezer labelled 400 kWh/year at $0.17/kWh costs $68.00/year, $5.67 per average month and $0.19 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWh$2.83$34.00
400 kWh/year1.10 kWh$5.67$68.00
700 kWh/year1.92 kWh$9.92$119.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

Worked example

A fridge-freezer labelled 400 kWh/year costs $68/year at an illustrative $0.17/kWh: about $5.67 per average month or $0.19 per day. At £0.2611/kWh the same label gives £104.44/year. These are worked scenarios, not claims about every fridge.

Typical refrigerator consumption

Fridge typeAnnual kWhApprox. daily units
Mini / bar fridge180 – 2500.5 – 0.7
Single-door 190 L, modern180 – 2600.5 – 0.7
Double-door 300 L, 4-star320 – 4200.9 – 1.2
Double-door 450 L400 – 5501.1 – 1.5
Side-by-side with ice maker600 – 8501.6 – 2.3
Chest freezer 200 L350 – 5001.0 – 1.4
Fridge over 15 years old900 – 1,4002.5 – 3.8

Make your fridge cheaper to run

  • Leave 5–10 cm of air behind and above it. A cramped condenser cannot reject heat and the compressor runs longer.
  • Vacuum the condenser coils twice a year. Dust is an insulator, and this is the single most neglected efficiency fix.
  • Set fridge to 4 °C and freezer to −18 °C. Colder than that adds energy with no food-safety benefit.
  • Check the door seal with a banknote. If it slides out easily, the gasket is leaking cold air and needs replacing.
  • Keep the freezer full but the fridge uncrowded. Frozen mass holds cold; a packed fridge blocks airflow.
  • Move it away from the oven and out of direct sun. Ambient temperature directly drives compressor runtime.

Frequently asked questions

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Does the fridge run for 24 hours a day?

It is usually plugged in for 24 hours, but compressor draw varies or cycles. In watts mode, use plugged-in hours and a duty factor once. In annual-label or measured-kWh mode, the cycling is already included.

Why is monthly cost not daily cost times 30?

Label mode divides the annual cost by 12 for an average calendar month. Daily cost divides by 365. A 30-day month costs daily cost times 30; the difference is calendar length, not extra energy.

Is a new fridge worth buying just for energy savings?

Subtract the new model’s annual kWh from the old model’s measured or labelled annual kWh, then multiply by your tariff. Divide the replacement cost by that annual saving for simple payback. Include condition, repair costs and disposal; a small energy saving may not justify replacement.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Fridge and Freezer Running Cost Calculator — the UAE

Estimate refrigerator costs in the UAE with prices in AED. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in UAE?

A fridge-freezer labelled 400 kWh/year at AED 0.3/kWh costs AED 120.00/year, AED 10.00 per average month and AED 0.33 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWhAED 5.00AED 60.00
400 kWh/year1.10 kWhAED 10.00AED 120.00
700 kWh/year1.92 kWhAED 17.50AED 210.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When refrigerator costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in the UAE — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

Fridge and Freezer Running Cost Calculator — Australia

Estimate refrigerator costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in Australia?

A fridge-freezer labelled 400 kWh/year at A$0.33/kWh costs A$132.00/year, A$11.00 per average month and A$0.36 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWhA$5.50A$66.00
400 kWh/year1.10 kWhA$11.00A$132.00
700 kWh/year1.92 kWhA$19.25A$231.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When refrigerator costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in Australia — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

CA regional edition

Fridge and Freezer Running Cost Calculator — Canada

Estimate refrigerator costs in Canada with prices in CAD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The C$0.19/kWh starting value is an illustrative input, not a verified live Canada average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in Canada?

A fridge-freezer labelled 400 kWh/year at C$0.19/kWh costs C$76.00/year, C$6.33 per average month and C$0.21 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWhC$3.17C$38.00
400 kWh/year1.10 kWhC$6.33C$76.00
700 kWh/year1.92 kWhC$11.08C$133.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in Canada

Canadian electricity is comparatively cheap, averaging around 19 cents per kWh, but the structure differs sharply by province. Quebec, Manitoba and British Columbia benefit from abundant hydro and sit well below the national average. Ontario uses mandatory time-of-use pricing with on-peak, mid-peak and off-peak windows that shift between summer and winter schedules, and also offers an optional tiered plan. Most provinces add a fixed monthly service charge on top of the per-kWh energy charge.

When refrigerator costs peak in Canada

Winter dominates in most of Canada, with December through February bringing the highest bills wherever heating is electric. Homes on natural gas heat see a much flatter annual profile, with a modest summer bump from air conditioning.

Local tip. In Ontario, shifting laundry and dishwashing to after 7pm on weekdays — or any time at weekends, when the entire day is off-peak — moves that consumption to roughly half the on-peak rate at no cost to you.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.12 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in Canada — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the Canada starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest hydro bill.

EU regional edition

Fridge and Freezer Running Cost Calculator — the Eurozone

Estimate refrigerator costs in the eurozone with prices in EUR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The €0.285/kWh starting value is an illustrative input, not a verified live Eurozone average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in Eurozone?

A fridge-freezer labelled 400 kWh/year at €0.285/kWh costs €114.00/year, €9.50 per average month and €0.31 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWh€4.75€57.00
400 kWh/year1.10 kWh€9.50€114.00
700 kWh/year1.92 kWh€16.62€199.50

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in the Eurozone

Eurozone electricity averages around €0.285 per kWh but the variation between member states is large — Germany and Denmark sit well above the average while France, helped by its nuclear fleet, sits below it. Bills typically combine an energy charge, a network or grid fee, and a substantial tax and levy component that in several countries exceeds the cost of the energy itself. Many suppliers offer day/night or dynamic hourly pricing, and dynamic tariffs linked to the wholesale spot market have become widely available.

When refrigerator costs peak in the Eurozone

Winter drives the peak in most of the eurozone, particularly in countries with significant electric heating. Southern member states such as Spain, Italy and Greece increasingly see a comparable summer peak from air conditioning.

Local tip. Check how much of your bill is energy and how much is network fees and taxes. In several member states the non-energy component is more than half the total, which means using less electricity saves less than the headline rate suggests.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.251 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in the Eurozone — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the Europe starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

IN regional edition

Fridge and Freezer Running Cost Calculator — India

Estimate refrigerator costs in India with prices in INR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in India?

A fridge-freezer labelled 400 kWh/year at ₹8/kWh costs ₹3,200.00/year, ₹266.67 per average month and ₹8.77 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWh₹133.33₹1,600.00
400 kWh/year1.10 kWh₹266.67₹3,200.00
700 kWh/year1.92 kWh₹466.67₹5,600.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When refrigerator costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in India — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

UK regional edition

Fridge and Freezer Running Cost Calculator — the United Kingdom

Estimate refrigerator costs in the UK with prices in GBP. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The £0.2611/kWh starting rate is the Jul–Sep 2026 Great Britain standard-variable Direct Debit average, including 5% VAT. It does not cover every UK tariff or Northern Ireland. The 57.19p daily standing charge is excluded from appliance costs. Ofgem source [5], checked 7 September 2026. Replace it with your own rate; this reference period ends 30 September 2026.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in United Kingdom?

A fridge-freezer labelled 400 kWh/year at £0.2611/kWh costs £104.44/year, £8.70 per average month and £0.29 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWh£4.35£52.22
400 kWh/year1.10 kWh£8.70£104.44
700 kWh/year1.92 kWh£15.23£182.77

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in the United Kingdom

An electricity bill separates variable kWh charges from a fixed standing charge. For the July-September 2026 period the Ofgem Great Britain Direct Debit standard-variable reference is 26.11p/kWh plus 57.19p/day, including 5% VAT. It applies as an average reference across England, Scotland and Wales, not to every UK household or Northern Ireland. Your own supplier, region, payment method or fixed-rate plan can differ. With a time-of-use plan, price each charging or appliance session using the rate in that window.

When refrigerator costs peak in the United Kingdom

UK electricity costs rise through the winter, peaking in December and January when lighting hours are longest and any electric heating is working hardest. Air conditioning is rare enough that summer is generally the cheapest quarter.

Local tip. Use your bill’s variable price per kWh when estimating an extra appliance. Do not add a standing charge to each device, or add VAT again if it is included. An off-peak EV rate can come with different daytime pricing; compare the whole household bill.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.207 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in the United Kingdom — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the UK starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

US regional edition

Fridge and Freezer Running Cost Calculator — the United States

Estimate refrigerator costs in the US with prices in USD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in United States?

A fridge-freezer labelled 400 kWh/year at $0.17/kWh costs $68.00/year, $5.67 per average month and $0.19 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWh$2.83$34.00
400 kWh/year1.10 kWh$5.67$68.00
700 kWh/year1.92 kWh$9.92$119.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in the United States

Most US households are billed a flat per-kWh rate plus a fixed monthly customer charge of roughly $8 to $15. Rates vary enormously by state — Hawaii runs above 50¢/kWh while Idaho and Utah sit near 12–13¢. Many utilities now offer optional time-of-use plans where afternoon and early-evening power costs substantially more than overnight power, and a growing number of states are making time-of-use the default for new connections. Some utilities also apply seasonal rates, with summer kWh priced higher than winter to reflect air-conditioning demand.

When refrigerator costs peak in the United States

Costs peak in July and August across most of the country, when cooling load is highest and many utilities switch to summer pricing at the same time. In the Northeast and Upper Midwest a second, smaller peak appears in January and February wherever homes use electric resistance heating or heat pumps.

Local tip. Check whether your utility offers a time-of-use plan before you assume a flat rate. If you can move laundry, dishwashing and EV charging to overnight hours, the off-peak rate is frequently less than half the on-peak rate and the switch costs nothing.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.371 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in the United States — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the US starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest utility bill.

ZA regional edition

Fridge and Freezer Running Cost Calculator — South Africa

Estimate refrigerator costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Fridge and Freezer Running Cost Calculator

Free · No sign-up
Cost per day—
Average month—
Cost per year—
kWh per day—
kWh per year—
Illustrative grid CO₂ / year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How much does a fridge freezer cost to run in South Africa?

A fridge-freezer labelled 400 kWh/year at R2.9/kWh costs R1,160.00/year, R96.67 per average month and R3.18 per day. No additional duty-cycle adjustment is applied to the label.

Example labelDaily energyAverage monthYear
200 kWh/year0.55 kWhR48.33R580.00
400 kWh/year1.10 kWhR96.67R1,160.00
700 kWh/year1.92 kWhR169.17R2,030.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When refrigerator costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Annual cost = Label kWh per year × Electricity price per kWh
From a meter: Annual kWh = Measured daily kWh × 365
From watts: Daily kWh = Watts ÷ 1000 × Plugged-in hours × Duty cycle ÷ 100

Energy-label and measured-kWh modes already include compressor cycling: do not apply another duty-cycle discount. In watts mode, enter plugged-in hours (normally 24) and the fraction of time the compressor runs. Actual consumption also changes with room temperature, door openings, defrosting and the thermostat setting.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Refrigerator costs in South Africa — FAQ

How much does it cost to run a fridge freezer?

Multiply its annual energy-label kWh by your electricity unit price. For a 400 kWh/year example at £0.2611/kWh, the cost is £104.44/year, £8.70 per average month and about 29p/day. Enter your own label and tariff rather than treating this as a typical bill.

How much does it cost to run a freezer?

The same formula works for a chest, upright or integrated freezer. An example using 250 kWh/year at $0.17/kWh costs $42.50/year. Size, room temperature and the model matter more than the word freezer: use its label or a multi-day meter reading.

How do I estimate a mini fridge or a second refrigerator?

Use each appliance’s own annual kWh or measure it separately. Add the annual costs if both stay plugged in. Do not infer consumption from the size alone, and do not unplug food storage equipment just to match an assumed schedule.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Ceiling Fan Running Cost Calculator

Ceiling Fan Running Cost Calculator

A ceiling fan is one of the cheapest appliances in the house to run — and one of the most-used. At 75 watts it costs a fraction of an air conditioner, which is why running a fan and raising the thermostat is the single best-value cooling strategy there is.

Ceiling Fan Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Units per hour = Watts ÷ 1000
Daily cost = Watts ÷ 1000 × Hours × Tariff
Season cost = Daily cost × Days in season

Ceiling fans run at a steady load, so unlike a fridge or an air conditioner there is no duty cycle to estimate — the figure on the label is close to what it actually draws. The one exception is a fan on an old resistive regulator: at reduced speed the fan draws less, but the regulator itself burns off the difference as heat, so total consumption barely falls. Electronic and BLDC controllers do genuinely reduce draw at lower speeds.

Worked example

A standard 75 W fan run 12 hours a day costs 0.9 kWh a day — about 15¢ at 17¢/kWh, or roughly $4.60 a month. A 28 W BLDC fan doing the same job costs $1.70 a month. Across four fans running all summer the difference is substantial.

Fan types compared

Fan typeTypical drawCost per 12 hMonthly at 12 h/day
BLDC ceiling fan28 W$0.06$1.71
5-star induction50 W$0.10$3.06
Standard ceiling fan75 W$0.15$4.59
Old fan, 15+ years85 W$0.17$5.20
Pedestal fan55 W$0.11$3.37
Exhaust fan35 W$0.07$2.14

Getting more from a fan

  • A fan cools people, not rooms. There is no point leaving one running in an empty room — unlike an air conditioner it does not lower the air temperature at all.
  • Use it to raise the AC thermostat. Every degree you can add to the AC setpoint saves far more than the fan costs to run. A fan plus 26°C beats an AC alone at 23°C on both comfort and cost.
  • Reverse it in winter. Running the fan slowly in reverse pushes warm air down from the ceiling instead of creating a draught, which can cut heating cost in rooms with high ceilings.
  • Clean the blades. Dust builds up on the leading edge and measurably reduces air delivery for the same power draw.
  • Replace the old regulator. A resistive regulator wastes the energy it 'saves' as heat. An electronic one actually reduces consumption at low speed.

Frequently asked questions

How much electricity does a ceiling fan use?

A standard ceiling fan draws 70 to 80 watts, so about 0.075 kWh an hour. Run 12 hours a day that is roughly 27 units a month. A BLDC fan drawing 28 W uses about a third of that.

Is it cheaper to run a fan or an air conditioner?

A fan is roughly twenty times cheaper. An AC at 1,500 W costs about the same per hour as twenty ceiling fans. That is why using a fan to tolerate a higher AC setpoint saves so much.

Does running a fan on low speed save electricity?

On a BLDC or electronic-controller fan, yes — meaningfully. On an old resistive regulator, barely: the regulator dissipates the difference as heat rather than saving it.

Do BLDC fans really use less power?

Yes, typically 28 W against 75 W for the same air delivery — around 60% less. They also run far longer on an inverter battery during a power cut, which is often the bigger practical benefit.

Should I leave the fan on when I leave the room?

No. A fan makes you feel cooler by moving air over your skin; it does not reduce room temperature. Running one in an empty room is pure waste.

Guides for this calculation

Related calculators

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You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Dehumidifier Running Cost Calculator

Dehumidifier Running Cost Calculator

A dehumidifier is cheap per hour and expensive per month, because it runs far longer than people expect. Understanding the difference between compressor and desiccant models — and using the humidistat properly — is what keeps the cost down.

Dehumidifier Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Units per day = Watts ÷ 1000 × Hours actually running
Monthly cost = Units per day × Days × Tariff
A humidistat cuts run hours; it does not change the wattage

The hours field is where most estimates go wrong. A dehumidifier with a humidistat does not run continuously — it cycles off once the target humidity is reached and back on when it drifts up. In a damp room in winter that might be 10 hours a day; in a mildly damp room in summer it might be two. If you are unsure, start with 8 hours and adjust once you have watched how often it actually runs.

Worked example

A 300 W compressor dehumidifier running 8 hours a day uses 2.4 kWh — about 41¢ at 17¢/kWh, or $12 a month. A desiccant model at 650 W over the same hours costs $27 a month, but works far better in an unheated room where a compressor unit would struggle.

Dehumidifier types compared

TypeTypical drawBest forMonthly at 8 h/day
Peltier / mini70 WWardrobes, small spaces$3
Compressor 10 L200 WSingle warm room$8
Compressor 20 L300 WWhole flat, above 15°C$12
Compressor 50 L600 WLarge or very damp house$24
Desiccant 7 L400 WCold rooms, garages$16
Desiccant 10 L650 WUnheated spaces in winter$27

Running one economically

  • Use the humidistat, not the timer. Set a target of 50–55% relative humidity and let it cycle. Running continuously past that point costs money and dries the air uncomfortably.
  • Close the door. Dehumidifying a room with the door open means dehumidifying the whole house through a small appliance.
  • Compressor units struggle below about 15°C. In a cold garage or unheated room a desiccant model will actually extract water where a compressor barely will, despite drawing more power.
  • Fix the source if you can. A dehumidifier treats the symptom. Ventilation, a lid on pans, and drying washing outdoors remove the moisture before it becomes an electricity bill.
  • Empty the tank or fit a drain hose. A full tank stops the unit, and an interrupted cycle means humidity climbs back before you notice.

Frequently asked questions

How much does it cost to run a dehumidifier?

A typical 300 W compressor model running 8 hours a day costs about 41¢ a day, or roughly $12 a month at 17¢/kWh. Larger or desiccant units cost two to three times that.

Are dehumidifiers expensive to run?

Per hour they are modest — comparable to a few light bulbs. The cost comes from run time: they often run far more hours a day than people assume, especially in winter.

Which is cheaper, compressor or desiccant?

A compressor unit uses less power for the same water extraction in a warm room. In a cold room the position reverses, because compressor efficiency collapses below about 15°C while desiccant performance holds steady.

Does a dehumidifier heat the room?

Slightly, yes. Almost all the electricity it consumes ends up as heat, and a desiccant model adds noticeably more warmth than a compressor one. In winter that heat is not entirely wasted.

Is it cheaper to run a dehumidifier or the heating?

For dealing with damp, the dehumidifier — heating a room to drive off moisture is far more expensive. For comfort, heating. They solve different problems and a dehumidifier is not a heater substitute.

Guides for this calculation

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Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Electric Heater Running Cost Calculator

Electric Heater Running Cost Calculator

Find out what your electric heater costs to run per hour and per month. Every resistive heater turns essentially 100% of its electricity into heat, so the maths is refreshingly simple — a 2,000 W heater uses 2 units every hour it is on, whatever the brand or the marketing claims.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

Worked example

A 2,000 W fan heater running 5 hours a day: 2 kWh × 5 = 10 kWh a day. At £0.247/kWh that is £2.47 a day, £74 a month and about £445 over a six-month heating season. Add a thermostat that cuts the duty cycle to 50% and the same heater costs roughly £222.

Cost per hour by heater wattage

HeaterWattsUnits per hour
Electric blanket60 – 150 W0.06 – 0.15
Small panel heater400 – 800 W0.4 – 0.8
Halogen heater (2 bar)800 W0.8
Fan heater, low1,000 W1.0
Oil-filled radiator, mid1,500 W1.5
Fan / convector heater, high2,000 W2.0
Large oil-filled radiator2,500 W2.5
Immersion heater3,000 W3.0

How to heat for less

  • Heat the person, not the house. A 100 W heated throw costs about a twentieth of a 2 kW heater and keeps you just as warm on the sofa.
  • Use the thermostat, not the power switch. A heater with an accurate thermostat idles for much of the hour; a cheap one without a thermostat runs flat out the whole time.
  • Close doors and heat one room. Halving the heated volume roughly halves the runtime needed to hold temperature.
  • Check whether a heat pump beats resistive heat. A reverse-cycle AC delivers 2.5–4 kWh of heat per kWh of electricity, so it can cut heating cost by 60–75%.
  • Draught-proof first. Letterbox brushes, door snakes and window film cost very little and reduce runtime permanently.
  • Shift to off-peak where you have a time-of-use tariff. Pre-heating during a cheap window and coasting can meaningfully cut the bill.

Frequently asked questions

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

How much does it cost to run a heater overnight?

Take the wattage, divide by 1,000, multiply by the hours and by your tariff. A 1,500 W heater over 8 hours is 12 kWh — roughly $2.04, £2.96 or ₹96 at average rates. A low-wattage 60 W electric blanket over the same 8 hours uses 0.48 kWh, costing under 10 cents.

Do halogen heaters use less electricity?

A halogen heater feels efficient because it warms you by radiation almost instantly, but a 1,200 W halogen still draws 1.2 units an hour. Its advantage is that you can often use fewer bars and run it for less time, not that it converts electricity any better.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Electric Heater Running Cost Calculator — the UAE

Estimate electric heater costs in the UAE with prices in AED. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and AED 90.00 for 30 days at AED 0.3/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000AED 45.00
75%7.500AED 67.50
100%10.000AED 90.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When electric heater costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in the UAE — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

Electric Heater Running Cost Calculator — Australia

Estimate electric heater costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Australia

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and A$99.00 for 30 days at A$0.33/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000A$49.50
75%7.500A$74.25
100%10.000A$99.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When electric heater costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in Australia — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

CA regional edition

Electric Heater Running Cost Calculator — Canada

Estimate electric heater costs in Canada with prices in CAD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The C$0.19/kWh starting value is an illustrative input, not a verified live Canada average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Canada

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and C$57.00 for 30 days at C$0.19/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000C$28.50
75%7.500C$42.75
100%10.000C$57.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in Canada

Canadian electricity is comparatively cheap, averaging around 19 cents per kWh, but the structure differs sharply by province. Quebec, Manitoba and British Columbia benefit from abundant hydro and sit well below the national average. Ontario uses mandatory time-of-use pricing with on-peak, mid-peak and off-peak windows that shift between summer and winter schedules, and also offers an optional tiered plan. Most provinces add a fixed monthly service charge on top of the per-kWh energy charge.

When electric heater costs peak in Canada

Winter dominates in most of Canada, with December through February bringing the highest bills wherever heating is electric. Homes on natural gas heat see a much flatter annual profile, with a modest summer bump from air conditioning.

Local tip. In Ontario, shifting laundry and dishwashing to after 7pm on weekdays — or any time at weekends, when the entire day is off-peak — moves that consumption to roughly half the on-peak rate at no cost to you.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.12 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in Canada — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the Canada starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest hydro bill.

EU regional edition

Electric Heater Running Cost Calculator in Euros

Calculate electric-heater running cost in euros using your own supplier’s €/kWh rate. Price a 1 kW, 2 kW or other heater by watts and runtime, then account for thermostat cycling. The calculator does not assume an EU-wide household tariff.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The €0.285/kWh starting value is an illustrative input, not a verified live Eurozone average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Eurozone

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and €85.50 for 30 days at €0.285/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000€42.75
75%7.500€64.12
100%10.000€85.50

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the Eurozone

Eurozone electricity averages around €0.285 per kWh but the variation between member states is large — Germany and Denmark sit well above the average while France, helped by its nuclear fleet, sits below it. Bills typically combine an energy charge, a network or grid fee, and a substantial tax and levy component that in several countries exceeds the cost of the energy itself. Many suppliers offer day/night or dynamic hourly pricing, and dynamic tariffs linked to the wholesale spot market have become widely available.

When electric heater costs peak in the Eurozone

Winter drives the peak in most of the eurozone, particularly in countries with significant electric heating. Southern member states such as Spain, Italy and Greece increasingly see a comparable summer peak from air conditioning.

Local tip. Check how much of your bill is energy and how much is network fees and taxes. In several member states the non-energy component is more than half the total, which means using less electricity saves less than the headline rate suggests.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.251 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in the Eurozone — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the Europe starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

IN regional edition

Electric Heater Running Cost Calculator — India

Estimate electric heater costs in India with prices in INR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and ₹2,400.00 for 30 days at ₹8/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000₹1,200.00
75%7.500₹1,800.00
100%10.000₹2,400.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When electric heater costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in India — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

UK regional edition

Electric Heater Running Cost Calculator — the United Kingdom

Estimate electric heater costs in the UK with prices in GBP. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The £0.2611/kWh starting rate is the Jul–Sep 2026 Great Britain standard-variable Direct Debit average, including 5% VAT. It does not cover every UK tariff or Northern Ireland. The 57.19p daily standing charge is excluded from appliance costs. Ofgem source [5], checked 7 September 2026. Replace it with your own rate; this reference period ends 30 September 2026.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United Kingdom

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and £78.33 for 30 days at £0.2611/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000£39.16
75%7.500£58.75
100%10.000£78.33

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the United Kingdom

An electricity bill separates variable kWh charges from a fixed standing charge. For the July-September 2026 period the Ofgem Great Britain Direct Debit standard-variable reference is 26.11p/kWh plus 57.19p/day, including 5% VAT. It applies as an average reference across England, Scotland and Wales, not to every UK household or Northern Ireland. Your own supplier, region, payment method or fixed-rate plan can differ. With a time-of-use plan, price each charging or appliance session using the rate in that window.

When electric heater costs peak in the United Kingdom

UK electricity costs rise through the winter, peaking in December and January when lighting hours are longest and any electric heating is working hardest. Air conditioning is rare enough that summer is generally the cheapest quarter.

Local tip. Use your bill’s variable price per kWh when estimating an extra appliance. Do not add a standing charge to each device, or add VAT again if it is included. An off-peak EV rate can come with different daytime pricing; compare the whole household bill.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.207 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in the United Kingdom — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the UK starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest energy bill.

US regional edition

Electric Space Heater Running Cost Calculator — US

Estimate electric space-heater cost per hour and month in US dollars. Enter 1,500 W, 2,000 W or your heater’s actual setting, then its runtime and your utility’s price per kWh. A thermostat’s off-time matters; nameplate watts alone are not your whole bill.

Quick answer. A 1,500 W heater at full power uses 1.5 kWh per hour. At an illustrative $0.17/kWh it costs $0.255/hour, or $2.04 for eight full-power hours. Use the duty control only if it actually cycles off.

Calculate with your numbers ↓

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United States

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and $51.00 for 30 days at $0.17/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000$25.50
75%7.500$38.25
100%10.000$51.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in the United States

Most US households are billed a flat per-kWh rate plus a fixed monthly customer charge of roughly $8 to $15. Rates vary enormously by state — Hawaii runs above 50¢/kWh while Idaho and Utah sit near 12–13¢. Many utilities now offer optional time-of-use plans where afternoon and early-evening power costs substantially more than overnight power, and a growing number of states are making time-of-use the default for new connections. Some utilities also apply seasonal rates, with summer kWh priced higher than winter to reflect air-conditioning demand.

When electric heater costs peak in the United States

Costs peak in July and August across most of the country, when cooling load is highest and many utilities switch to summer pricing at the same time. In the Northeast and Upper Midwest a second, smaller peak appears in January and February wherever homes use electric resistance heating or heat pumps.

Local tip. Check whether your utility offers a time-of-use plan before you assume a flat rate. If you can move laundry, dishwashing and EV charging to overnight hours, the off-peak rate is frequently less than half the on-peak rate and the switch costs nothing.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.371 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in the United States — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the US starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest utility bill.

ZA regional edition

Electric Heater Running Cost Calculator — South Africa

Estimate electric heater costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Electric Heater Running Cost Calculator

Free · No sign-up
100%
Cost per hour—
Cost per day—
Cost per month—
Cost per year—
Units per day—
Units per month—
CO₂ per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

The starting example uses 2,000 W for 5 hours/day at 100% duty. That is 10 kWh/day and R870.00 for 30 days at R2.9/kWh. This is full-power arithmetic, not a claim that every appliance runs continuously. Lower the duty cycle if the rated power cycles off.

Average dutyDaily kWh30-day cost
50%5.000R435.00
75%7.500R652.50
100%10.000R870.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. The annual result assumes the same daily use for 365 days; for a seasonal appliance, multiply daily cost by actual seasonal operating days instead.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When electric heater costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Units used (kWh) = Watts ÷ 1000 × Hours on
Cost per hour = Watts ÷ 1000 × Tariff per kWh
Season cost = Cost per day × Days in the heating season

Resistive heaters are all 100% efficient at the plug, so two heaters of the same wattage cost exactly the same to run. What differs is how the heat is delivered — an oil-filled radiator with a thermostat spends more time switched off, which is where the real saving comes from.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Electric Heater costs in South Africa — FAQ

How much does a 2000W heater cost to run per hour?

A 2,000 W heater uses exactly 2 units (kWh) per hour of continuous running. At average 2026 tariffs that is about $0.34 in the US, £0.49 in the UK, ₹16 in India, A$0.66 in Australia and €0.57 in the eurozone. If the heater has a thermostat and cycles, the real hourly cost is lower — model that with the duty-cycle field.

Which type of electric heater is cheapest to run?

At equal wattage they all cost the same, because every one of them converts electricity to heat with essentially 100% efficiency. The cheapest in practice is whichever one lets you run fewer watts for less time: a thermostatically controlled oil-filled radiator or panel heater in a small closed room, or better still a heat pump, which is 250–400% efficient because it moves heat rather than making it.

Is an oil-filled radiator cheaper than a fan heater?

Only indirectly. A 1,500 W oil-filled radiator uses 1.5 units an hour just like any other 1,500 W appliance. It tends to cost less over an evening because its thermostat and thermal mass mean it is actually drawing power for perhaps half the time, while a cheap fan heater may run continuously.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Inverter vs Non-Inverter AC Running Cost Calculator

Inverter vs Non-Inverter AC Running Cost Calculator

Compare inverter versus non-inverter AC electricity consumption, running cost and purchase-price payback. Set realistic average duty and operating hours for each unit. A higher upfront price only pays back if the energy saving is large enough at your tariff.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

Worked example

A 1.5-tonne non-inverter AC at 1,500 W running 8 hours a day for 180 days uses 2,160 units a year. An inverter unit at 1,400 W averaging 66% duty uses 1,339 units. At ₹8/kWh that is ₹17,280 against ₹10,714 — a saving of ₹6,566 a year. On an ₹8,000 price difference the payback is 1.22 years, and over ten years the inverter is roughly ₹57,660 ahead.

Where the inverter saving comes from

FactorNon-inverterInverterEffect
Compressor controlOn/offVariable speedMain saving
Typical duty cycle90–100%55–70%30–40% less energy
Rated power1,500 W1,400 WMinor
Startup surgeEvery cycleOnceReduces peak load
Temperature swing±2°C±0.5°CComfort, not cost
Purchase priceLower20–30% higherPaid back in 1–2 yr

Getting the most from an inverter AC

  • Do not switch it off and on. An inverter saves by running continuously at low speed. Turning it off for an hour and back on forces a full-power pull-down and wipes out the advantage.
  • Set 24–26°C and leave it. Every degree lower raises consumption by roughly 6%, and an inverter cannot save you from a 18°C setpoint.
  • Size it correctly. An oversized inverter spends its life at minimum speed and never reaches its efficient operating band; an undersized one runs flat out and behaves like a non-inverter.
  • Use a ceiling fan with it. The fan costs 30–75 W and lets you raise the setpoint two degrees, which saves far more than the fan uses.
  • Clean the filters monthly in season. Restricted airflow makes the compressor run longer at the same setpoint.
  • Check the ISEER, not just the star rating. Star thresholds shift over time; ISEER is the underlying number and is directly comparable across years.

Frequently asked questions

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Should I turn my inverter AC off when leaving the room?

For short absences, no. Restarting forces the compressor back to full speed to pull the room down again, which costs more than the low-speed running you avoided. For absences of more than an hour or two, switch it off.

Do inverter ACs cool faster?

Yes. An inverter can run its compressor above nominal speed during pull-down, so it typically reaches setpoint faster than a fixed-speed unit, then throttles back.

Which is better for a room with heavy usage?

An inverter, clearly. The more hours you run it, the faster the price premium is repaid. Inverters make the least sense for occasional or backup use.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Inverter vs Non-Inverter AC Cost Calculator UAE

Compare inverter and non-inverter AC running costs in the UAE, in AED. Enter your effective electricity rate, cooling schedule and average compressor load. Purchase prices start at zero for this regional example—use real local quotes for payback.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

At AED 0.3/kWh, the illustrated Non-inverter AC uses 12.000 kWh per day of use, versus 7.392 kWh for Inverter AC. The model uses 8.000 versus 8.000 hours, at 100% versus 66% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use180 uses / year
Non-inverter AC12.000 kWhAED 3.60AED 648.00
Inverter AC7.392 kWhAED 2.22AED 399.17

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When inverter vs normal ac costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Inverter vs Normal AC costs in the UAE — FAQ

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

Inverter vs Non-Inverter AC Running Cost Calculator — Australia

Estimate inverter vs normal ac costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Australia

At A$0.33/kWh, the illustrated Non-inverter AC uses 12.000 kWh per day of use, versus 7.392 kWh for Inverter AC. The model uses 8.000 versus 8.000 hours, at 100% versus 66% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use180 uses / year
Non-inverter AC12.000 kWhA$3.96A$712.80
Inverter AC7.392 kWhA$2.44A$439.08

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When inverter vs normal ac costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Inverter vs Normal AC costs in Australia — FAQ

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

IN regional edition

Inverter vs Non-Inverter AC Cost Calculator India

Is the price difference between inverter and non-inverter ACs worth paying in India? Compare yearly electricity cost in rupees using each unit’s watts and duty, then enter actual purchase quotes to estimate simple payback.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

At ₹8/kWh, the illustrated Non-inverter AC uses 12.000 kWh per day of use, versus 7.392 kWh for Inverter AC. The model uses 8.000 versus 8.000 hours, at 100% versus 66% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use180 uses / year
Non-inverter AC12.000 kWh₹96.00₹17,280.00
Inverter AC7.392 kWh₹59.14₹10,644.48

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When inverter vs normal ac costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Inverter vs Normal AC costs in India — FAQ

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

US regional edition

Inverter vs Non-Inverter AC Running Cost Calculator — the United States

Estimate inverter vs normal ac costs in the US with prices in USD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United States

At $0.17/kWh, the illustrated Non-inverter AC uses 12.000 kWh per day of use, versus 7.392 kWh for Inverter AC. The model uses 8.000 versus 8.000 hours, at 100% versus 66% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use180 uses / year
Non-inverter AC12.000 kWh$2.04$367.20
Inverter AC7.392 kWh$1.26$226.20

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the United States

Most US households are billed a flat per-kWh rate plus a fixed monthly customer charge of roughly $8 to $15. Rates vary enormously by state — Hawaii runs above 50¢/kWh while Idaho and Utah sit near 12–13¢. Many utilities now offer optional time-of-use plans where afternoon and early-evening power costs substantially more than overnight power, and a growing number of states are making time-of-use the default for new connections. Some utilities also apply seasonal rates, with summer kWh priced higher than winter to reflect air-conditioning demand.

When inverter vs normal ac costs peak in the United States

Costs peak in July and August across most of the country, when cooling load is highest and many utilities switch to summer pricing at the same time. In the Northeast and Upper Midwest a second, smaller peak appears in January and February wherever homes use electric resistance heating or heat pumps.

Local tip. Check whether your utility offers a time-of-use plan before you assume a flat rate. If you can move laundry, dishwashing and EV charging to overnight hours, the off-peak rate is frequently less than half the on-peak rate and the switch costs nothing.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.371 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Inverter vs Normal AC costs in the United States — FAQ

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Is the US starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest utility bill.

ZA regional edition

Inverter vs Non-Inverter AC Running Cost Calculator — South Africa

Estimate inverter vs normal ac costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Inverter vs Non-Inverter AC Running Cost Calculator

Free · No sign-up

Non-inverter AC

100%

Inverter AC

66%
Cheaper to run—
You save per year—
Extra cost paid back in—
Non-inverter AC — per hour—
Inverter AC — per hour—
Non-inverter AC — per use—
Inverter AC — per use—
Non-inverter AC — per year—
Inverter AC — per year—
Non-inverter AC — units/year—
Inverter AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

At R2.9/kWh, the illustrated Non-inverter AC uses 12.000 kWh per day of use, versus 7.392 kWh for Inverter AC. The model uses 8.000 versus 8.000 hours, at 100% versus 66% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use180 uses / year
Non-inverter AC12.000 kWhR34.80R6,264.00
Inverter AC7.392 kWhR21.44R3,858.62

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When inverter vs normal ac costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Effective watts = Rated watts × Duty cycle ÷ 100
Annual units = Effective watts ÷ 1000 × Hours × Days
Payback years = Price difference ÷ Annual saving

Duty cycle is what separates the two machines, and it is the field most comparisons ignore. A non-inverter compressor is either fully on or fully off, so across a cooling hour it runs at close to 100% of rated draw when the room is loading. An inverter compressor varies its speed and settles at roughly 50 to 70% once the room reaches setpoint. The rated wattage of the two units is often similar — the saving comes almost entirely from the duty cycle, not the label.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Inverter vs Normal AC costs in South Africa — FAQ

How much electricity does an inverter AC save?

Typically 30 to 40% compared with a non-inverter of the same capacity, in real use. The saving comes from the variable-speed compressor running at partial load rather than cycling fully on and off.

Is an inverter AC worth the extra cost?

At normal usage — around 8 hours a day for a cooling season — the price difference typically pays back in one to two years, after which the saving is pure gain. If you use the AC only a few days a year, the payback stretches out and the case weakens.

Does an inverter AC use less electricity at night?

Yes, usually. Once the room reaches setpoint and the outdoor temperature drops, the compressor throttles down to a low speed. A non-inverter keeps cycling at full power regardless.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Window AC vs Split AC Running Cost Calculator

Window AC vs Split AC Running Cost Calculator

Split air conditioners are quieter, better looking and more efficient. Window units are cheaper to buy and cheaper to install. At normal usage the efficiency gap is worth several thousand rupees a year, which means the split unit typically repays its premium within two cooling seasons.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

Worked example

A 1.5-tonne window AC at 1,600 W running 8 hours a day for 150 days uses 1,920 units — ₹15,360 at ₹8/kWh. An inverter split at 1,200 W and 75% duty uses 1,080 units, or ₹8,640. That is ₹6,720 saved a year, so a ₹12,000 price difference pays back in 1.79 years.

Window vs split AC

Window ACSplit AC
Typical power (1.5 T)1,500–1,800 W1,100–1,400 W
Inverter models availableFewStandard
Annual cost (8 h × 150 d)₹15,360₹8,640
Purchase price₹24,000–30,000₹35,000–48,000
InstallationSimple, low costNeeds technician
Indoor noise50–55 dB28–38 dB
Wall opening neededLargeSmall pipe hole
ServicingEasy, one unitTwo units

Which one to buy

  • Heavy use favours the split. The saving scales with hours, so a bedroom AC running nightly all summer repays the premium far faster than one used a few weeks a year.
  • Rented accommodation favours the window unit. It is portable, needs no outdoor mounting, and you can take it with you.
  • Check the ISEER, not the type. A 5-star inverter window unit beats a 3-star non-inverter split. The label matters more than the form factor.
  • Do not undersize. An AC too small for the room runs continuously and never reaches setpoint, which costs more than the larger unit would have.
  • Shade the outdoor unit. A condenser in direct sun works harder. Shading it — without blocking airflow — measurably improves efficiency.

Frequently asked questions

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Can a window AC be an inverter model?

Yes, inverter window units exist and are increasingly common. They close most of the efficiency gap while keeping the simpler installation.

Which is cheaper to install and service?

The window unit on both counts. It is a single self-contained box with no refrigerant piping to run, and servicing means dealing with one unit rather than two.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Window vs Split AC Electricity Cost Calculator UAE

Compare window and split AC running costs in the UAE, in AED. Match cooling capacity where possible and enter measured electrical watts plus average duty. A split design alone does not guarantee lower consumption; the actual units and installation matter.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

At AED 0.3/kWh, the illustrated Window AC uses 12.800 kWh per day of use, versus 7.200 kWh for Split AC. The model uses 8.000 versus 8.000 hours, at 100% versus 75% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Window AC12.800 kWhAED 3.84AED 576.00
Split AC7.200 kWhAED 2.16AED 324.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When window vs split ac costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Window vs Split AC costs in the UAE — FAQ

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

Window AC vs Split AC Running Cost Calculator — Australia

Estimate window vs split ac costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Australia

At A$0.33/kWh, the illustrated Window AC uses 12.800 kWh per day of use, versus 7.200 kWh for Split AC. The model uses 8.000 versus 8.000 hours, at 100% versus 75% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Window AC12.800 kWhA$4.22A$633.60
Split AC7.200 kWhA$2.38A$356.40

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When window vs split ac costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Window vs Split AC costs in Australia — FAQ

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

IN regional edition

Window AC vs Split AC Running Cost Calculator — India

Estimate window vs split ac costs in India with prices in INR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

At ₹8/kWh, the illustrated Window AC uses 12.800 kWh per day of use, versus 7.200 kWh for Split AC. The model uses 8.000 versus 8.000 hours, at 100% versus 75% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Window AC12.800 kWh₹102.40₹15,360.00
Split AC7.200 kWh₹57.60₹8,640.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When window vs split ac costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Window vs Split AC costs in India — FAQ

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

US regional edition

Window AC vs Split AC Running Cost Calculator — the United States

Estimate window vs split ac costs in the US with prices in USD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in United States

At $0.17/kWh, the illustrated Window AC uses 12.800 kWh per day of use, versus 7.200 kWh for Split AC. The model uses 8.000 versus 8.000 hours, at 100% versus 75% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Window AC12.800 kWh$2.18$326.40
Split AC7.200 kWh$1.22$183.60

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the United States

Most US households are billed a flat per-kWh rate plus a fixed monthly customer charge of roughly $8 to $15. Rates vary enormously by state — Hawaii runs above 50¢/kWh while Idaho and Utah sit near 12–13¢. Many utilities now offer optional time-of-use plans where afternoon and early-evening power costs substantially more than overnight power, and a growing number of states are making time-of-use the default for new connections. Some utilities also apply seasonal rates, with summer kWh priced higher than winter to reflect air-conditioning demand.

When window vs split ac costs peak in the United States

Costs peak in July and August across most of the country, when cooling load is highest and many utilities switch to summer pricing at the same time. In the Northeast and Upper Midwest a second, smaller peak appears in January and February wherever homes use electric resistance heating or heat pumps.

Local tip. Check whether your utility offers a time-of-use plan before you assume a flat rate. If you can move laundry, dishwashing and EV charging to overnight hours, the off-peak rate is frequently less than half the on-peak rate and the switch costs nothing.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.371 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Window vs Split AC costs in the United States — FAQ

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Is the US starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest utility bill.

ZA regional edition

Window AC vs Split AC Running Cost Calculator — South Africa

Estimate window vs split ac costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Window AC vs Split AC Running Cost Calculator

Free · No sign-up

Window AC

100%

Split AC

75%
Cheaper to run—
You save per year—
Extra cost paid back in—
Window AC — per hour—
Split AC — per hour—
Window AC — per use—
Split AC — per use—
Window AC — per year—
Split AC — per year—
Window AC — units/year—
Split AC — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

At R2.9/kWh, the illustrated Window AC uses 12.800 kWh per day of use, versus 7.200 kWh for Split AC. The model uses 8.000 versus 8.000 hours, at 100% versus 75% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Window AC12.800 kWhR37.12R5,568.00
Split AC7.200 kWhR20.88R3,132.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When window vs split ac costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Annual saving = Difference in units × Tariff
Payback years = Price difference ÷ Annual saving

Two effects favour the split unit. First, most splits sold today are inverter models, so they run at a partial duty cycle rather than cycling fully on and off — that is the bulk of the difference. Second, a split's outdoor unit sits in open air with a larger condenser, so it rejects heat more effectively than a window unit whose condenser is crammed into the back of a single box. If you are comparing a non-inverter split against a window unit, set both duty cycles to 100 and the gap narrows considerably.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Window vs Split AC costs in South Africa — FAQ

Does a split AC use less electricity than a window AC?

Usually yes, by roughly 30 to 40% in real use, mainly because most splits are inverter models and have a better-ventilated outdoor condenser. A non-inverter split against a window unit is a much closer contest.

Is a split AC worth the extra cost?

At normal usage the running-cost saving repays the price difference in about two cooling seasons. Add the noise difference and the case is strong for a room you sleep in.

Which AC is better for a small room?

For a small room used occasionally, a window unit is perfectly adequate and much cheaper to install. For a bedroom used nightly, the split's quieter operation and lower running cost usually win.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Desert Cooler vs Air Conditioner Cost Calculator

Desert Cooler vs Air Conditioner Cost Calculator

An evaporative air cooler uses roughly a seventh of the electricity of an air conditioner — but it only works well in dry heat. This calculator gives you the cost side of the decision; your local humidity decides the comfort side.

Desert Cooler vs Air Conditioner Cost Calculator

Free · No sign-up

Air conditioner

70%

Desert cooler

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Air conditioner — per hour—
Desert cooler — per hour—
Air conditioner — per use—
Desert cooler — per use—
Air conditioner — per year—
Desert cooler — per year—
Air conditioner — units/year—
Desert cooler — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Cooler = fan motor + water pump, running continuously at full draw
AC = compressor cycling at 60–80% duty once the room is at setpoint

The comparison is not quite like for like and it is worth being honest about that. An air conditioner lowers both temperature and humidity and works in any climate. An evaporative cooler lowers temperature by adding humidity, which means it works extremely well in dry heat and barely at all when the air is already humid. In a coastal or monsoon climate a cooler makes the room feel worse, not better. Where it does work, the running-cost difference is enormous.

Worked example

A 1.5-tonne AC at 1,500 W and 70% duty running 8 hours a day for 150 days uses 1,260 units — ₹10,080 at ₹8/kWh. A 180 W cooler over the same hours uses 216 units, or ₹1,728. The saving is ₹8,352 a year, and since the cooler is also cheaper to buy, the payback is immediate.

Cooler vs AC

Desert coolerAir conditioner
Power draw150–220 W1,200–2,000 W
Annual cost (8 h × 150 d)₹1,728₹10,080
Purchase price₹7,000–12,000₹28,000–45,000
Works in humid airPoorlyYes
Temperature drop4–8°C in dry air10–15°C anywhere
Needs water refillsYes, dailyNo
Needs open windowYes, for airflowNo, sealed room
Runs on inverter backupEasilyRarely

Choosing between them

  • Check your humidity, not your temperature. Below about 40% relative humidity a cooler works beautifully. Above 60% it just makes the room clammy.
  • Coolers need an open window. They work by pushing air through wet pads and out of the room. Sealing the room stops them working entirely — the opposite of an AC.
  • Use a cooler in the dry season and an AC in the humid one. Many households in dry-then-monsoon climates own both and switch, which captures most of the saving.
  • Keep the pads clean and the tank fresh. Scaled pads reduce cooling and stagnant water is a hygiene issue.
  • A cooler runs on an inverter; an AC generally does not. During outages this is often the deciding factor.

Frequently asked questions

How much electricity does an air cooler use compared with an AC?

About one-seventh. A typical cooler draws 150 to 220 W against 1,200 to 2,000 W for a split AC, and the cooler has no compressor cycling on and off.

Is a desert cooler cheaper than an AC?

Much cheaper on both counts — roughly a quarter to a third of the purchase price and about a sixth of the running cost. The trade-off is that it only cools effectively in dry air.

Do air coolers work in humid weather?

Not well. Evaporative cooling relies on dry air absorbing moisture. When humidity is already high there is little evaporation, so you get airflow and added dampness rather than cooling.

How much does an air cooler cost to run per month?

A 180 W cooler running 8 hours a day costs about 43 units a month — roughly ₹346 at ₹8/kWh. An equivalent AC would be around ₹2,000.

Can I run an air cooler on an inverter?

Yes, easily. At under 200 W a cooler runs for hours on a typical home inverter battery, which is one of its practical advantages in areas with frequent outages.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

Desert Cooler vs Air Conditioner Cost Calculator — the UAE

Estimate cooler vs ac costs in the UAE with prices in AED. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Desert Cooler vs Air Conditioner Cost Calculator

Free · No sign-up

Air conditioner

70%

Desert cooler

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Air conditioner — per hour—
Desert cooler — per hour—
Air conditioner — per use—
Desert cooler — per use—
Air conditioner — per year—
Desert cooler — per year—
Air conditioner — units/year—
Desert cooler — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

At AED 0.3/kWh, the illustrated Air conditioner uses 8.400 kWh per day of use, versus 1.440 kWh for Desert cooler. The model uses 8.000 versus 8.000 hours, at 70% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Air conditioner8.400 kWhAED 2.52AED 378.00
Desert cooler1.440 kWhAED 0.43AED 64.80

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When cooler vs ac costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Cooler = fan motor + water pump, running continuously at full draw
AC = compressor cycling at 60–80% duty once the room is at setpoint

The comparison is not quite like for like and it is worth being honest about that. An air conditioner lowers both temperature and humidity and works in any climate. An evaporative cooler lowers temperature by adding humidity, which means it works extremely well in dry heat and barely at all when the air is already humid. In a coastal or monsoon climate a cooler makes the room feel worse, not better. Where it does work, the running-cost difference is enormous.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Cooler vs AC costs in the UAE — FAQ

How much electricity does an air cooler use compared with an AC?

About one-seventh. A typical cooler draws 150 to 220 W against 1,200 to 2,000 W for a split AC, and the cooler has no compressor cycling on and off.

Is a desert cooler cheaper than an AC?

Much cheaper on both counts — roughly a quarter to a third of the purchase price and about a sixth of the running cost. The trade-off is that it only cools effectively in dry air.

Do air coolers work in humid weather?

Not well. Evaporative cooling relies on dry air absorbing moisture. When humidity is already high there is little evaporation, so you get airflow and added dampness rather than cooling.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

IN regional edition

Air Cooler vs AC Electricity Cost Calculator India

Compare air-cooler versus AC electricity consumption in India and price the difference in rupees. The two appliances do not provide identical humidity control or cooling performance. Treat the result as an electricity-cost comparison, not equal comfort.

Desert Cooler vs Air Conditioner Cost Calculator

Free · No sign-up

Air conditioner

70%

Desert cooler

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Air conditioner — per hour—
Desert cooler — per hour—
Air conditioner — per use—
Desert cooler — per use—
Air conditioner — per year—
Desert cooler — per year—
Air conditioner — units/year—
Desert cooler — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

At ₹8/kWh, the illustrated Air conditioner uses 8.400 kWh per day of use, versus 1.440 kWh for Desert cooler. The model uses 8.000 versus 8.000 hours, at 70% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Air conditioner8.400 kWh₹67.20₹10,080.00
Desert cooler1.440 kWh₹11.52₹1,728.00

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When cooler vs ac costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Cooler = fan motor + water pump, running continuously at full draw
AC = compressor cycling at 60–80% duty once the room is at setpoint

The comparison is not quite like for like and it is worth being honest about that. An air conditioner lowers both temperature and humidity and works in any climate. An evaporative cooler lowers temperature by adding humidity, which means it works extremely well in dry heat and barely at all when the air is already humid. In a coastal or monsoon climate a cooler makes the room feel worse, not better. Where it does work, the running-cost difference is enormous.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Cooler vs AC costs in India — FAQ

How much electricity does an air cooler use compared with an AC?

About one-seventh. A typical cooler draws 150 to 220 W against 1,200 to 2,000 W for a split AC, and the cooler has no compressor cycling on and off.

Is a desert cooler cheaper than an AC?

Much cheaper on both counts — roughly a quarter to a third of the purchase price and about a sixth of the running cost. The trade-off is that it only cools effectively in dry air.

Do air coolers work in humid weather?

Not well. Evaporative cooling relies on dry air absorbing moisture. When humidity is already high there is little evaporation, so you get airflow and added dampness rather than cooling.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

ZA regional edition

Desert Cooler vs Air Conditioner Cost Calculator — South Africa

Estimate cooler vs ac costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

Desert Cooler vs Air Conditioner Cost Calculator

Free · No sign-up

Air conditioner

70%

Desert cooler

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Air conditioner — per hour—
Desert cooler — per hour—
Air conditioner — per use—
Desert cooler — per use—
Air conditioner — per year—
Desert cooler — per year—
Air conditioner — units/year—
Desert cooler — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

At R2.9/kWh, the illustrated Air conditioner uses 8.400 kWh per day of use, versus 1.440 kWh for Desert cooler. The model uses 8.000 versus 8.000 hours, at 70% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use150 uses / year
Air conditioner8.400 kWhR24.36R3,654.00
Desert cooler1.440 kWhR4.18R626.40

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When cooler vs ac costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Annual units = Watts × Duty ÷ 100 ÷ 1000 × Hours × Days
Cooler = fan motor + water pump, running continuously at full draw
AC = compressor cycling at 60–80% duty once the room is at setpoint

The comparison is not quite like for like and it is worth being honest about that. An air conditioner lowers both temperature and humidity and works in any climate. An evaporative cooler lowers temperature by adding humidity, which means it works extremely well in dry heat and barely at all when the air is already humid. In a coastal or monsoon climate a cooler makes the room feel worse, not better. Where it does work, the running-cost difference is enormous.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

Cooler vs AC costs in South Africa — FAQ

How much electricity does an air cooler use compared with an AC?

About one-seventh. A typical cooler draws 150 to 220 W against 1,200 to 2,000 W for a split AC, and the cooler has no compressor cycling on and off.

Is a desert cooler cheaper than an AC?

Much cheaper on both counts — roughly a quarter to a third of the purchase price and about a sixth of the running cost. The trade-off is that it only cools effectively in dry air.

Do air coolers work in humid weather?

Not well. Evaporative cooling relies on dry air absorbing moisture. When humidity is already high there is little evaporation, so you get airflow and added dampness rather than cooling.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

BLDC vs Normal Ceiling Fan Cost Calculator

BLDC vs Normal Ceiling Fan Cost Calculator

A BLDC ceiling fan uses roughly a third of the electricity of a conventional induction fan for the same air delivery. Fans run for thousands of hours a year, so a saving of 47 watts per fan compounds into real money — and the payback is often under eighteen months.

BLDC vs Normal Ceiling Fan Cost Calculator

Free · No sign-up

Normal fan

100%

BLDC fan

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Normal fan — per hour—
BLDC fan — per hour—
Normal fan — per use—
BLDC fan — per use—
Normal fan — per year—
BLDC fan — per year—
Normal fan — units/year—
BLDC fan — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Annual units = Watts ÷ 1000 × Hours × Days
Annual saving = (Normal watts − BLDC watts) ÷ 1000 × Hours × Days × Tariff
Payback years = Price difference ÷ Annual saving

Fans are the simplest case in this whole category: there is no duty cycle to estimate, no thermostat and no weather dependence. A fan draws its rated power whenever it is on, so the comparison is close to exact. The only nuance is speed — a BLDC fan genuinely draws less at lower speeds because it uses electronic commutation, whereas an old fan on a resistive regulator burns the difference off as heat in the regulator rather than saving it.

Worked example

A conventional 75 W fan running 12 hours a day for 240 days uses 216 units a year — ₹1,728 at ₹8/kWh. A 28 W BLDC fan uses 81 units, or ₹648. The saving is ₹1,083 a year per fan, so a ₹1,600 price difference pays back in 1.48 years. With four fans in the house, the household saves over ₹4,300 a year.

BLDC vs conventional fan

Normal fanBLDC fanDifference
Power at full speed75 W28 W−63%
Annual units (12 h × 240 d)21681−135 units
Annual cost at ₹8/kWh₹1,728₹648−₹1,080
Typical price₹1,600₹3,200+₹1,600
Inverter backup runtime~2 h~5 h2.5× longer
Remote / speed controlRareStandard—

Buying and running fans well

  • Replace the fans you use most first. The payback is driven entirely by run hours, so the bedroom fan justifies itself long before the guest-room one does.
  • BLDC fans transform inverter backup. At 28 W instead of 75, the same battery runs the same fans two and a half times longer during an outage — often the deciding factor.
  • Do not keep the old regulator. BLDC fans come with their own electronic controller or remote; wiring one through an old resistive regulator defeats the purpose.
  • Check the air delivery figure, not just the watts. A low-wattage fan that moves little air is not efficient, it is just weak. Look for air delivery in cubic metres per minute alongside the wattage.
  • Clean the blades quarterly. Dust on the leading edge reduces delivery for the same power on any fan type.

Frequently asked questions

How much electricity does a BLDC fan save?

About 60 to 65% compared with a conventional induction fan — typically 28 W against 75 W for equivalent air delivery. Over 12 hours a day for 240 days that is around 135 units a year per fan.

Are BLDC fans worth the extra price?

For fans you run regularly, yes. At 12 hours a day the price premium is typically repaid in about a year and a half, and the fan will last a decade or more beyond that.

Do BLDC fans give the same air as normal fans?

Good ones do — look for air delivery around 210 to 230 cubic metres per minute, which matches a standard 1,200 mm fan. Cheap low-wattage fans that skimp on delivery are a different thing entirely.

Do BLDC fans work on an inverter?

Yes, and much better than conventional fans. Their lower draw means the same battery runs them far longer, and most models handle the modified sine wave output of common inverters without issue.

Why are BLDC fans more expensive?

They use a brushless DC motor and an electronic controller instead of a simple induction motor. The extra electronics cost more to make but are what allow the efficiency gain and variable speed control.

Country-specific versions

Choose a regional version for local context. The starting rates are examples; enter your own tariff.

Guides for this calculation

Related calculators

Use this calculator on your site

You can add this calculator to your website without an account or API key. Get the embed code →

Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Regional editions

AE regional edition

BLDC vs Normal Ceiling Fan Cost Calculator — the UAE

Estimate bldc vs normal fan costs in the UAE with prices in AED. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

BLDC vs Normal Ceiling Fan Cost Calculator

Free · No sign-up

Normal fan

100%

BLDC fan

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Normal fan — per hour—
BLDC fan — per hour—
Normal fan — per use—
BLDC fan — per use—
Normal fan — per year—
BLDC fan — per year—
Normal fan — units/year—
BLDC fan — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The AED 0.3/kWh starting value is an illustrative input, not a verified live UAE average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in UAE

At AED 0.3/kWh, the illustrated Normal fan uses 0.900 kWh per day of use, versus 0.336 kWh for BLDC fan. The model uses 12.000 versus 12.000 hours, at 100% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use240 uses / year
Normal fan0.900 kWhAED 0.27AED 64.80
BLDC fan0.336 kWhAED 0.10AED 24.19

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in the UAE

UAE electricity is billed on a slab structure that also depends on the customer category. In Dubai, DEWA charges expatriate residential customers in four consumption bands rising from 23 to 38 fils per kWh, with UAE nationals on a separate subsidised scale. Bills also carry a fuel surcharge, meter charges and municipality housing fees. Many apartments in newer developments are additionally connected to district cooling, which is billed entirely separately by providers such as Empower and typically includes a fixed capacity charge that you pay even when the apartment is empty.

When bldc vs normal fan costs peak in the UAE

Costs peak from May through September, when cooling runs almost continuously and consumption commonly moves into the highest tariff slab. The difference between a February bill and an August bill is often threefold.

Local tip. If your building is on district cooling, the fixed capacity charge is unavoidable and unrelated to how much you cool the apartment — so judge any efficiency measure against the consumption portion only. Setting the thermostat to 24°C rather than 20°C is the largest single lever most residents have.

How this calculator works

Annual units = Watts ÷ 1000 × Hours × Days
Annual saving = (Normal watts − BLDC watts) ÷ 1000 × Hours × Days × Tariff
Payback years = Price difference ÷ Annual saving

Fans are the simplest case in this whole category: there is no duty cycle to estimate, no thermostat and no weather dependence. A fan draws its rated power whenever it is on, so the comparison is close to exact. The only nuance is speed — a BLDC fan genuinely draws less at lower speeds because it uses electronic commutation, whereas an old fan on a resistive regulator burns the difference off as heat in the regulator rather than saving it.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.41 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

BLDC vs Normal Fan costs in the UAE — FAQ

How much electricity does a BLDC fan save?

About 60 to 65% compared with a conventional induction fan — typically 28 W against 75 W for equivalent air delivery. Over 12 hours a day for 240 days that is around 135 units a year per fan.

Are BLDC fans worth the extra price?

For fans you run regularly, yes. At 12 hours a day the price premium is typically repaid in about a year and a half, and the fan will last a decade or more beyond that.

Do BLDC fans give the same air as normal fans?

Good ones do — look for air delivery around 210 to 230 cubic metres per minute, which matches a standard 1,200 mm fan. Cheap low-wattage fans that skimp on delivery are a different thing entirely.

Is the UAE starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest DEWA bill.

AU regional edition

BLDC vs Normal Ceiling Fan Cost Calculator — Australia

Estimate bldc vs normal fan costs in Australia with prices in AUD. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

BLDC vs Normal Ceiling Fan Cost Calculator

Free · No sign-up

Normal fan

100%

BLDC fan

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Normal fan — per hour—
BLDC fan — per hour—
Normal fan — per use—
BLDC fan — per use—
Normal fan — per year—
BLDC fan — per year—
Normal fan — units/year—
BLDC fan — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The A$0.33/kWh starting value is an illustrative input, not a verified live Australia average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in Australia

At A$0.33/kWh, the illustrated Normal fan uses 0.900 kWh per day of use, versus 0.336 kWh for BLDC fan. The model uses 12.000 versus 12.000 hours, at 100% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use240 uses / year
Normal fan0.900 kWhA$0.30A$71.28
BLDC fan0.336 kWhA$0.11A$26.61

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in Australia

Australian retailers charge a usage rate of roughly 33c per kWh plus a daily supply charge of around $1.00 to $1.30. Many homes are on time-of-use tariffs with distinct peak, shoulder and off-peak windows, and a separate cheaper 'controlled load' circuit is common for electric hot water and pool pumps. Households with rooftop solar also receive a feed-in tariff for exported energy, though feed-in rates have fallen sharply and are now typically well below the usage rate — which makes self-consumption far more valuable than export.

When bldc vs normal fan costs peak in Australia

Summer, from December to February, drives the highest bills in most of the country through air-conditioning load. Victoria, Tasmania and the ACT see a second winter peak where electric heating is common.

Local tip. If you have solar, using power while the sun is up is worth roughly three times as much as exporting it. Running the dishwasher, washing machine and pool pump in the middle of the day is the single highest-value habit change available to an Australian solar household.

How this calculator works

Annual units = Watts ÷ 1000 × Hours × Days
Annual saving = (Normal watts − BLDC watts) ÷ 1000 × Hours × Days × Tariff
Payback years = Price difference ÷ Annual saving

Fans are the simplest case in this whole category: there is no duty cycle to estimate, no thermostat and no weather dependence. A fan draws its rated power whenever it is on, so the comparison is close to exact. The only nuance is speed — a BLDC fan genuinely draws less at lower speeds because it uses electronic commutation, whereas an old fan on a resistive regulator burns the difference off as heat in the regulator rather than saving it.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.634 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

BLDC vs Normal Fan costs in Australia — FAQ

How much electricity does a BLDC fan save?

About 60 to 65% compared with a conventional induction fan — typically 28 W against 75 W for equivalent air delivery. Over 12 hours a day for 240 days that is around 135 units a year per fan.

Are BLDC fans worth the extra price?

For fans you run regularly, yes. At 12 hours a day the price premium is typically repaid in about a year and a half, and the fan will last a decade or more beyond that.

Do BLDC fans give the same air as normal fans?

Good ones do — look for air delivery around 210 to 230 cubic metres per minute, which matches a standard 1,200 mm fan. Cheap low-wattage fans that skimp on delivery are a different thing entirely.

Is the Australia starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest power bill.

IN regional edition

BLDC vs Normal Ceiling Fan Cost Calculator — India

Estimate bldc vs normal fan costs in India with prices in INR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

BLDC vs Normal Ceiling Fan Cost Calculator

Free · No sign-up

Normal fan

100%

BLDC fan

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Normal fan — per hour—
BLDC fan — per hour—
Normal fan — per use—
BLDC fan — per use—
Normal fan — per year—
BLDC fan — per year—
Normal fan — units/year—
BLDC fan — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The ₹8/kWh starting value is an illustrative input, not a verified live India average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in India

At ₹8/kWh, the illustrated Normal fan uses 0.900 kWh per day of use, versus 0.336 kWh for BLDC fan. The model uses 12.000 versus 12.000 hours, at 100% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use240 uses / year
Normal fan0.900 kWh₹7.20₹1,728.00
BLDC fan0.336 kWh₹2.69₹645.12

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in India

Indian domestic tariffs are almost always slab-based, and this is what makes estimating a bill genuinely difficult. The first 100 units might cost ₹4–5, the next 200 units ₹6–7, and consumption beyond 400 units ₹8–9 or more. Crucially, in many states crossing a slab boundary re-prices your entire consumption at the higher rate rather than just the excess units. On top of the energy charge sit a fixed charge based on sanctioned load, an electricity duty, and often a fuel surcharge that varies month to month. Rates differ substantially between state discoms, so a Maharashtra bill and a Delhi bill for identical usage will differ.

When bldc vs normal fan costs peak in India

Costs peak from April to June across most of the country, when air conditioners, coolers and fans run hardest. This is also exactly when households are most likely to cross into a higher tariff slab, which is why summer bills often rise faster than summer consumption does.

Local tip. Find out where your next slab boundary sits and how close you are to it. Because many discoms re-price all units at the higher rate once you cross, cutting consumption by twenty or thirty units can occasionally save several hundred rupees — far more than the units themselves are worth.

How this calculator works

Annual units = Watts ÷ 1000 × Hours × Days
Annual saving = (Normal watts − BLDC watts) ÷ 1000 × Hours × Days × Tariff
Payback years = Price difference ÷ Annual saving

Fans are the simplest case in this whole category: there is no duty cycle to estimate, no thermostat and no weather dependence. A fan draws its rated power whenever it is on, so the comparison is close to exact. The only nuance is speed — a BLDC fan genuinely draws less at lower speeds because it uses electronic commutation, whereas an old fan on a resistive regulator burns the difference off as heat in the regulator rather than saving it.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.713 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

BLDC vs Normal Fan costs in India — FAQ

How much electricity does a BLDC fan save?

About 60 to 65% compared with a conventional induction fan — typically 28 W against 75 W for equivalent air delivery. Over 12 hours a day for 240 days that is around 135 units a year per fan.

Are BLDC fans worth the extra price?

For fans you run regularly, yes. At 12 hours a day the price premium is typically repaid in about a year and a half, and the fan will last a decade or more beyond that.

Do BLDC fans give the same air as normal fans?

Good ones do — look for air delivery around 210 to 230 cubic metres per minute, which matches a standard 1,200 mm fan. Cheap low-wattage fans that skimp on delivery are a different thing entirely.

Is the India starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest electricity bill.

ZA regional edition

BLDC vs Normal Ceiling Fan Cost Calculator — South Africa

Estimate bldc vs normal fan costs in South Africa with prices in ZAR. The form starts with explicit example inputs, not a live quote. Use the worked calculation below, then replace the tariff and usage with your own figures.

BLDC vs Normal Ceiling Fan Cost Calculator

Free · No sign-up

Normal fan

100%

BLDC fan

100%
Cheaper to run—
You save per year—
Extra cost paid back in—
Normal fan — per hour—
BLDC fan — per hour—
Normal fan — per use—
BLDC fan — per use—
Normal fan — per year—
BLDC fan — per year—
Normal fan — units/year—
BLDC fan — units/year—
10-year saving: B versus A—
CO₂ saved per year—

Enter your details above to see results.

Tariff scope. The R2.9/kWh starting value is an illustrative input, not a verified live South Africa average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

Worked example in South Africa

At R2.9/kWh, the illustrated Normal fan uses 0.900 kWh per day of use, versus 0.336 kWh for BLDC fan. The model uses 12.000 versus 12.000 hours, at 100% versus 100% average duty. These are explicit usage assumptions, not local product measurements.

OptionEnergy / day of useCost / day of use240 uses / year
Normal fan0.900 kWhR2.61R626.40
BLDC fan0.336 kWhR0.97R233.86

These examples use stated assumptions, not a product test. Change the form inputs for your own calculation. Purchase prices are optional: outside the source-currency example they start at zero. Enter actual local quotes rather than converting a different market’s retail price.

Guides for this calculation

How electricity is billed in South Africa

Most South African households buy electricity on a prepaid meter, and Eskom's Homepower and municipal prepaid tariffs are block-based: the first block of units each month is cheapest, and the rate steps up as you buy more within the same calendar month. Because the blocks reset monthly, buying a large amount of electricity in one go pushes you into the higher blocks immediately. Postpaid customers additionally pay a fixed basic charge. Tariffs have risen far faster than general inflation for over a decade, and load shedding schedules add a further complication by concentrating consumption into fewer hours.

When bldc vs normal fan costs peak in South Africa

Winter, from June to August, brings the highest bills as geysers work harder against colder inlet water and electric heating comes on. Highveld winters in particular drive a sharp seasonal increase.

Local tip. The geyser is typically 30 to 40 percent of a South African household's electricity use. Fitting a geyser blanket and a timer, and dropping the thermostat to 55°C, is the highest-return efficiency spend available — usually recovered within a few months.

How this calculator works

Annual units = Watts ÷ 1000 × Hours × Days
Annual saving = (Normal watts − BLDC watts) ÷ 1000 × Hours × Days × Tariff
Payback years = Price difference ÷ Annual saving

Fans are the simplest case in this whole category: there is no duty cycle to estimate, no thermostat and no weather dependence. A fan draws its rated power whenever it is on, so the comparison is close to exact. The only nuance is speed — a BLDC fan genuinely draws less at lower speeds because it uses electronic commutation, whereas an old fan on a resistive regulator burns the difference off as heat in the regulator rather than saving it.

What is outside this cost estimate?

Product maintenance, repairs, financing and a guaranteed performance level are not included. Where a grid-carbon estimate appears, it uses the illustrative factor 0.928 kg CO₂/kWh, not a live local measurement or full lifecycle calculation. No petrol-versus-EV emissions comparison is inferred from fuel litres.

The local worked examples above use this page’s currency. The global calculator guide contains additional appliance assumptions and comparison examples.

BLDC vs Normal Fan costs in South Africa — FAQ

How much electricity does a BLDC fan save?

About 60 to 65% compared with a conventional induction fan — typically 28 W against 75 W for equivalent air delivery. Over 12 hours a day for 240 days that is around 135 units a year per fan.

Are BLDC fans worth the extra price?

For fans you run regularly, yes. At 12 hours a day the price premium is typically repaid in about a year and a half, and the fan will last a decade or more beyond that.

Do BLDC fans give the same air as normal fans?

Good ones do — look for air delivery around 210 to 230 cubic metres per minute, which matches a standard 1,200 mm fan. Cheap low-wattage fans that skimp on delivery are a different thing entirely.

Is the South Africa starting rate a live quote?

No. The tariff note names the scope and source of the starting rate where available; otherwise it is explicitly illustrative. Replace it with your own variable electricity rate. Keep fixed connection charges separate.

The same calculator for other countries

Source date: . Published by Original energy guide. Illustrative defaults are not verified live tariffs; check your latest municipal bill.

Space Heater vs Central Heating Cost Calculator

Space Heater vs Central Heating Cost Calculator

"Is it cheaper to heat one room with a space heater than to run the whole house?" The answer depends on three numbers: the wattage of each option, how efficiently each converts energy to heat, and how long you run them. This calculator compares any two heating options side by side.

Space Heater vs Central Heating Cost Calculator

Free · No sign-up

Option A

Option B

Cheaper per unit of heat—
Saving per year—
A — rated heat output—
B — rated heat output—
A — cost per useful kWh—
B — cost per useful kWh—
A — cost/hour at selected load—
B — cost/hour at selected load—
A — cost per year—
B — cost per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Useful heat output at rated power = Rated input kW × Efficiency / COP
Cost per useful kWh = Fuel price per kWh ÷ Efficiency / COP
Comparable hourly cost = Same selected useful heating load × Cost per useful kWh

Hourly and annual costs use the SAME useful heat load for both systems, not different rated heat outputs. Set each fuel price separately. Rated output is a capacity check only. Model one room or a whole home consistently: this calculator does not estimate building heat loss or choose equipment size. Fixed gas connection charges are separate.

Worked example

At an illustrative $0.17/kWh, delivering the same 2 kW of heat costs $0.34/hour with resistance heating (COP 1), or $0.106/hour with a heat pump at COP 3.2. The heat pump needs only 0.625 kW of input for that load. Whole-home heating needs a different total load from one-room heating; do not assume the same comfort scope.

Heating efficiency compared

Heating typeTypical COP / efficiencyCost per kWh of heat at $0.17
Electric resistive heater1.0$0.170
Oil-filled radiator1.0$0.170
Halogen / infrared heater1.0$0.170
Air-source heat pump (mild)3.5 – 4.0$0.043 – $0.049
Air-source heat pump (cold)2.0 – 2.5$0.068 – $0.085
Reverse-cycle AC3.0 – 3.5$0.049 – $0.057
Ground-source heat pump4.0 – 5.0$0.034 – $0.043

Choosing the cheaper option

  • Compare the same heated space. Warming unused rooms can offset a more efficient heater’s advantage. Estimate the actual useful heat demand rather than treating one room and the whole home as equivalent.
  • A reverse-cycle air conditioner is a heat pump. If you already own one for cooling, you already own the cheapest electric heating in the house — use it in heat mode.
  • COP falls as it gets colder. A heat pump rated at 4.0 in mild weather may deliver 2.0 at −5°C. Use a realistic winter figure, not the marketing number.
  • All electric resistive heaters are identical on cost. Fan heater, oil-filled radiator, halogen, infrared — every one is exactly 100% efficient. Claims otherwise are marketing.
  • Draught-proofing beats both. Heat leaving through gaps costs the same whichever appliance produced it.

Frequently asked questions

Is a space heater cheaper than central heating?

It depends entirely on what your central heating is. Against a whole-house resistive or older system heating rooms you are not using, a single space heater in one occupied room is usually cheaper. Against a heat pump, the space heater is almost always more expensive per unit of heat delivered because its efficiency is three to four times lower.

What is COP and why does it matter?

Coefficient of performance is the ratio of heat delivered to electricity consumed. A COP of 1.0 means one unit of electricity gives one unit of heat; a COP of 3.2 means it gives 3.2 units. It is the single most important number when comparing heating options.

Are oil-filled radiators cheaper than fan heaters?

At the same electrical input and runtime they consume the same electricity. Stored heat released after switch-off was paid for while the oil radiator was on; it is not free heat. Thermostat accuracy, comfort and how long you need warmth can change actual runtime.

How much does it cost to run a 2000W heater for an hour?

Exactly 2 kWh, so multiply your tariff by two. That is 34¢ at 17¢/kWh, 50p at 25p/kWh, or ₹16 at ₹8/kWh.

Is a heat pump worth it if I already have electric heating?

Almost certainly. Replacing resistive heating with a heat pump cuts heating electricity by roughly two-thirds to three-quarters for the same warmth, which is the largest single saving available in an all-electric home.

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Heat Pump vs Gas Boiler Cost Calculator

Heat Pump vs Gas Boiler Cost Calculator

Comparing a heat pump with a gas boiler is not a comparison of appliances — it is a comparison of two fuels at two different efficiencies. Electricity costs more per unit than gas almost everywhere, but a heat pump delivers three or four units of heat per unit consumed, while a boiler delivers less than one.

Heat Pump vs Gas Boiler Cost Calculator

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Option A

Option B

Cheaper per unit of heat—
Saving per year—
A — rated heat output—
B — rated heat output—
A — cost per useful kWh—
B — cost per useful kWh—
A — cost/hour at selected load—
B — cost/hour at selected load—
A — cost per year—
B — cost per year—

Enter your details above to see results.

Tariff scope. The $0.17/kWh starting value is an illustrative input, not a verified live United States average or a supplier quote. Enter the variable rate from your bill. Fixed charges are excluded from individual appliance costs.

Power, usage, fuel prices and purchase prices are example assumptions. Grid-carbon factors are illustrative, not live or lifecycle data. Read our calculation and sourcing method.

How this calculator works

Useful heat output at rated power = Rated input kW × Efficiency / COP
Cost per useful kWh = Fuel price per kWh ÷ Efficiency / COP
Comparable hourly cost = Same selected useful heating load × Cost per useful kWh

Hourly and annual costs use the SAME useful heat load for both systems, not different rated heat outputs. Set each fuel price separately. Rated output is a capacity check only. Model one room or a whole home consistently: this calculator does not estimate building heat loss or choose equipment size. Fixed gas connection charges are separate.

Worked example

Gas at 6.5p/kWh through a 90% efficient boiler costs 7.2p per useful kWh. Electricity at 25p/kWh through a heat pump with an SCOP of 3.2 costs 7.8p per useful kWh — almost identical. Improve the SCOP to 3.6 and the heat pump wins; drop electricity to an off-peak 18p and it wins comfortably.

Cost per useful kWh of heat

SystemEfficiencyFuel rateCost per useful kWh
Old non-condensing boiler0.786.5p gas8.3p
Modern condensing boiler0.906.5p gas7.2p
Heat pump, poor install2.425p elec10.4p
Heat pump, typical3.225p elec7.8p
Heat pump, well designed3.825p elec6.6p
Heat pump on off-peak tariff3.218p elec5.6p
Direct electric heating1.025p elec25.0p

What actually decides the answer

  • The spark gap is everything. That is the ratio between electricity and gas prices. Below about 3.5:1 a good heat pump wins; above 4:1 gas is hard to beat on running cost alone.
  • SCOP depends on your radiators, not just the unit. A heat pump running at 35°C flow into large radiators or underfloor heating achieves a far better SCOP than one forced to 55°C into undersized ones.
  • Off-peak tariffs change the maths. Heat pump tariffs with cheap overnight rates, combined with a well-insulated house, can move the heat pump decisively ahead.
  • Insulate before you switch. A heat pump in a leaky house has to run at a higher flow temperature, which drops SCOP exactly when you need it most.
  • Count the standing charges. Removing a gas connection eliminates its daily standing charge entirely, which is worth roughly £100 a year in the UK.

Frequently asked questions

Is a heat pump cheaper to run than a gas boiler?

It is close, and depends on the ratio of electricity to gas prices in your market and on the heat pump's real seasonal efficiency. At a 3.8:1 price ratio and a SCOP of 3.2 they are roughly level; a better-designed system or a cheaper tariff tips it to the heat pump.

What is SCOP and how is it different from COP?

COP is efficiency at one operating point, usually a favourable one. SCOP averages performance across an entire heating season including cold weather. SCOP is the number to use for running-cost estimates; COP is the number used in marketing.

Do heat pumps work in cold weather?

Yes — they are standard across Scandinavia. Efficiency falls as it gets colder, so a unit achieving COP 4.0 at 7°C might manage 2.2 at −7°C. Correct sizing for your design temperature is what matters.

Why is my heat pump not saving me money?

Usually one of three things: flow temperature set too high because radiators are undersized, a poorly configured weather compensation curve, or an electricity tariff that is not suited to heat pump use. All three are fixable and all three are common.

Should I switch from gas to a heat pump?

On running cost alone the case is currently marginal in markets with cheap gas and expensive electricity. It becomes strong with good insulation, a well-designed low-temperature system, a heat pump tariff, or any available installation grant.

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Imported source date: ; publisher and review details have not been independently verified. Defaults are illustrative unless a dated source is named; check your own bill.

Methodology: kWh = watts × hours ÷ 1,000; cost depends on the applicable tariff and actual usage. See US Department of Energy: estimating appliance energy use and Bureau of Energy Efficiency, India.