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Cost to run a window air conditioner in Maryland
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$0.19/hour
Window Air Conditioner at 900 W in Maryland (21.40¢/kWh) · $46.84/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.19 | $5.86 | $70.30 |
| 2 h/day | $0.39 | $11.71 | $140.60 |
| 4 h/day | $0.77 | $23.42 | $281.20 |
| 8 h/day | $1.54 | $46.84 | $562.39 |
| 12 h/day | $2.31 | $70.26 | $843.59 |
| 24 h/day | $4.62 | $140.52 | $1,687.18 |
A 8,000-10,000 BTU window unit draws roughly 700-1,000 W while the compressor runs.
Same appliance, nearby states
FAQ
How much does it cost to run a window air conditioner in Maryland?
At 900 W and 21.40¢/kWh: $0.19 per hour, $1.54 per day and $46.84 per month at 8 h/day.
How does Maryland 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 Maryland
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