Free AC Electricity Calculator

AC Running Cost Calculator

Estimate how much it costs to run a central air conditioner per hour, day, month and year using AC tonnage, SEER2 efficiency, daily runtime and your electricity rate.

Calculate AC Running Cost

Air Conditioner Electricity Cost

Estimate what your AC costs to run.

If you want to compare different air-conditioner efficiency ratings, use our SEER2 savings calculator . For whole-system energy budgeting, use the HVAC monthly energy cost calculator .

Calculate Air Conditioner Running Cost

Enter your AC size, efficiency, runtime and electricity rate.

Air Conditioner Size

SEER2 Rating Use the equipment rating if known.

Estimated AC Runtime Per Day Use an average cooling-day estimate.

Electricity Rate ($ / kWh) Replace this example with your actual utility rate.

Cooling Days Per Year

Average Cooling Load Helps avoid assuming full output during every runtime hour.

Estimated Monthly AC Running Cost - -

This is an informational electricity-use estimate. Actual compressor operation, outdoor temperature, humidity, thermostat settings, ducts, equipment condition and utility pricing can change the result.

- Approx. Operating kW

Cost Per Hour -

Cost Per Day -

Energy Per Day -

Cooling Season -

Concerned about high AC operating costs?

Request HVAC help below if you want to provide your location and air-conditioning details.

Important: SEER2 is a seasonal efficiency metric, so this calculator converts capacity and SEER2 into an approximate equivalent electrical demand for budgeting. It should not be treated as a measurement of your unit's actual real-time wattage.