Cooling · May 2026 rates
Window Air Conditioner Electricity Cost
The default example uses 900 W for 8 hours/day on 30 days. Change any input below to match your device and usage.
Adjustable calculator
Calculate window ac cost
Uses the selected state's latest EIA residential average unless you enter your own utility rate. Taxes, fixed charges, tiers and time-of-use pricing are not included.
U.S. average example
$39.83 for the default period
216.0 kWh at 18.44¢/kWh.
Important assumption
Power draw is not always constant
Compressor cycling, room size, outdoor temperature, efficiency, and thermostat setting can substantially change actual consumption.
State effect
Same usage, different electricity price
Lower-cost examples
Idaho$26.68
Utah$27.99
Oklahoma$28.90
Higher-cost examples
Hawaii$112.32
California$71.82
New York$64.65
How the estimate works
Energy use equals power in kilowatts multiplied by operating hours. The result in kilowatt-hours is multiplied by the selected electricity price. PowerCostAtlas starts with the latest available EIA residential state average and lets you replace it with the exact cents-per-kWh rate from your utility bill.
The estimate covers electricity consumption only. It does not add fixed monthly utility charges, taxes, demand charges, tiered pricing, or time-of-use adjustments.