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Cost to run a window air conditioner in Pennsylvania
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$0.20/hour
Window Air Conditioner at 900 W in Pennsylvania (21.77¢/kWh) · $47.65/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.20 | $5.96 | $71.51 |
| 2 h/day | $0.39 | $11.91 | $143.03 |
| 4 h/day | $0.78 | $23.83 | $286.06 |
| 8 h/day | $1.57 | $47.65 | $572.12 |
| 12 h/day | $2.35 | $71.48 | $858.17 |
| 24 h/day | $4.70 | $142.95 | $1,716.35 |
A 8,000-10,000 BTU window unit draws roughly 700-1,000 W while the compressor runs.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Pennsylvania | 21.77 | $47.65 |
| Ohio | 19.38 | $42.42 |
| Wisconsin | 19.41 | $42.48 |
| Maryland | 21.40 | $46.84 |
| Michigan | 22.99 | $50.32 |
| Vermont | 23.84 | $52.18 |
| Connecticut | 24.51 | $53.65 |
FAQ
How much does it cost to run a window air conditioner in Pennsylvania?
At 900 W and 21.77¢/kWh: $0.20 per hour, $1.57 per day and $47.65 per month at 8 h/day.
How does Pennsylvania compare with other states?
The same use costs $27.84/month in Nevada (cheapest) and $103.27/month in Hawaii (most expensive); the US average is $39.75.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Window Air Conditioner cost calculator · Electricity cost in Pennsylvania
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