How much does an air conditioner cost to run?
Estimate cooling-energy cost using electrical input power. Do not use cooling capacity in BTU/h or kW unless the specification explicitly identifies it as electrical input.
How this calculator works
EuroWattCalc converts the appliance's power from watts to kilowatts, multiplies it by the time used, then multiplies the resulting kilowatt-hours by the electricity price you enter.
What can change the real cost?
- Inverter air conditioners can modulate power after the room approaches its set temperature, so maximum input may overstate average draw.
- Outdoor temperature, insulation, sun exposure, room size and thermostat setting affect load.
- Filters and airflow can affect system performance; follow the manufacturer's maintenance instructions.
Air-conditioning specifications can contain several different power figures, so choosing the electrical input is the most important step.
Frequently asked questions
Can I enter the cooling capacity shown in kW?
Only if it is specifically electrical input. A unit may have several kilowatts of cooling capacity while consuming much less electrical power.
Why does inverter AC power vary?
An inverter can change compressor speed to match the cooling load instead of operating only at full output or off.
Does this calculate heating mode too?
It can estimate electrical running cost if you enter the actual electrical input for heating operation.