How Much Does It Cost to Run a Window air conditioner? (July 2026)
Running a Window air conditioner (900 W typical) for 8 hours a day costs between $27.48 per month in Louisiana and $103.68 per month in Hawaii, at each state's official average residential rate for July 2026.
Window air conditioner: what it costs you
Pick your state and how long it runs each day. Nothing you type is stored.
- Cost per month
- $42.01
- Cost per year
- $504.14
Assumes a 30-day month (year = 12 × month) at Ohio's average residential rate of 19.45¢/kWh (U.S. EIA, July 2026). Your plan's price differs.
Typical wattage: 900 W (DOE Energy Saver, verified 2026-07-17) — 10,000 BTU window unit ~900 W (500-1,440 W range). A representative figure, not a spec sheet for your model.
Monthly cost in every state (8 hours/day)
| State | Price | Cost / month |
|---|---|---|
| Hawaii | 48.00¢/kWh | $103.68 |
| California | 33.61¢/kWh | $72.60 |
| Maine | 32.41¢/kWh | $70.01 |
| Massachusetts | 30.49¢/kWh | $65.86 |
| New York | 29.90¢/kWh | $64.58 |
| Alaska | 28.83¢/kWh | $62.27 |
| Rhode Island | 28.29¢/kWh | $61.11 |
| New Hampshire | 26.60¢/kWh | $57.46 |
| District of Columbia | 25.21¢/kWh | $54.45 |
| New Jersey | 25.19¢/kWh | $54.41 |
| Connecticut | 24.16¢/kWh | $52.19 |
| Vermont | 23.75¢/kWh | $51.30 |
| Michigan | 23.05¢/kWh | $49.79 |
| Pennsylvania | 21.72¢/kWh | $46.92 |
| Maryland | 21.41¢/kWh | $46.25 |
| Ohio | 19.45¢/kWh | $42.01 |
| Illinois | 19.22¢/kWh | $41.52 |
| Wisconsin | 19.06¢/kWh | $41.17 |
| Delaware | 18.48¢/kWh | $39.92 |
| Virginia | 17.55¢/kWh | $37.91 |
| Minnesota | 17.45¢/kWh | $37.69 |
| Colorado | 17.00¢/kWh | $36.72 |
| Indiana | 16.73¢/kWh | $36.14 |
| Alabama | 16.40¢/kWh | $35.42 |
| Georgia | 16.27¢/kWh | $35.14 |
| Missouri | 16.09¢/kWh | $34.75 |
| New Mexico | 16.09¢/kWh | $34.75 |
| Iowa | 15.99¢/kWh | $34.54 |
| Oregon | 15.97¢/kWh | $34.50 |
| Texas | 15.88¢/kWh | $34.30 |
| West Virginia | 15.78¢/kWh | $34.08 |
| South Carolina | 15.47¢/kWh | $33.42 |
| Arizona | 15.38¢/kWh | $33.22 |
| South Dakota | 15.37¢/kWh | $33.20 |
| Kansas | 15.27¢/kWh | $32.98 |
| North Carolina | 15.16¢/kWh | $32.75 |
| Florida | 15.03¢/kWh | $32.46 |
| Montana | 14.99¢/kWh | $32.38 |
| Washington | 14.71¢/kWh | $31.77 |
| Mississippi | 14.54¢/kWh | $31.41 |
| Wyoming | 14.36¢/kWh | $31.02 |
| Oklahoma | 14.35¢/kWh | $31.00 |
| Arkansas | 14.33¢/kWh | $30.95 |
| Kentucky | 13.81¢/kWh | $29.83 |
| Nebraska | 13.78¢/kWh | $29.76 |
| Idaho | 13.73¢/kWh | $29.66 |
| Tennessee | 13.71¢/kWh | $29.61 |
| North Dakota | 13.41¢/kWh | $28.97 |
| Utah | 13.12¢/kWh | $28.34 |
| Nevada | 12.77¢/kWh | $27.58 |
| Louisiana | 12.72¢/kWh | $27.48 |
How to cut this cost
- Run it fewer hours. The cost above scales linearly with runtime - use the calculator to see what your actual hours cost.
- Measure what it really draws. The wattage here is a typical DOE figure; a plug-in electricity usage monitor shows what your unit actually uses.
- Compare it with similar loads: portable air conditioner, central air conditioner, ceiling fan, box fan, dehumidifier.
- See what else drives your bill. Our guide to what uses the most electricity in a home ranks every load we cost out here, and how to lower your electric bill ranks the levers by how much they actually save.
Frequently asked questions
- How much does it cost to run a Window air conditioner?
- Running a Window air conditioner (900 W typical) for 8 hours a day costs between $27.48 per month in Louisiana and $103.68 per month in Hawaii, at each state's official average residential rate for July 2026.
- How many watts does a Window air conditioner use?
- A typical window air conditioner draws about 900 watts (10,000 BTU window unit ~900 W (500-1,440 W range).), per DOE Energy Saver figures. Actual draw varies by model.
- How can I lower the cost of running a Window air conditioner?
- The cost scales linearly with runtime, so cutting hours cuts cost directly. A plug-in electricity usage monitor shows what your specific unit draws, since the wattage above is a typical DOE figure, not your model's spec. For the full picture of what else drives your bill, see what uses the most electricity in a home.
Rates: U.S. Energy Information Administration residential average retail price, July 2026 (public domain). Typical wattage: 900 W, DOE Energy Saver, verified 2026-07-17 (10,000 BTU window unit ~900 W (500-1,440 W range).). Costs assume a 30-day month at the state's average residential rate; your model, usage and plan price differ.