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Cost to run a window air conditioner in Massachusetts
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$0.27/hour
Window Air Conditioner at 900 W in Massachusetts (30.48¢/kWh) · $66.71/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.27 | $8.34 | $100.13 |
| 2 h/day | $0.55 | $16.68 | $200.25 |
| 4 h/day | $1.10 | $33.36 | $400.51 |
| 8 h/day | $2.19 | $66.71 | $801.01 |
| 12 h/day | $3.29 | $100.07 | $1,201.52 |
| 24 h/day | $6.58 | $200.14 | $2,403.04 |
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 |
|---|---|---|
| Massachusetts | 30.48 | $66.71 |
| New York | 28.65 | $62.71 |
| Alaska | 29.41 | $64.37 |
| California | 29.75 | $65.12 |
| Maine | 32.11 | $70.28 |
| Hawaii | 47.18 | $103.27 |
FAQ
How much does it cost to run a window air conditioner in Massachusetts?
At 900 W and 30.48¢/kWh: $0.27 per hour, $2.19 per day and $66.71 per month at 8 h/day.
How does Massachusetts 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 Massachusetts
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