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Cost to run a window air conditioner in South Dakota
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$0.14/hour
Window Air Conditioner at 900 W in South Dakota (15.15¢/kWh) · $33.16/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.14 | $4.15 | $49.77 |
| 2 h/day | $0.27 | $8.29 | $99.54 |
| 4 h/day | $0.55 | $16.58 | $199.07 |
| 8 h/day | $1.09 | $33.16 | $398.14 |
| 12 h/day | $1.64 | $49.74 | $597.21 |
| 24 h/day | $3.27 | $99.48 | $1,194.43 |
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 |
|---|---|---|
| South Dakota | 15.15 | $33.16 |
| North Carolina | 14.95 | $32.72 |
| Florida | 14.99 | $32.81 |
| Arizona | 15.05 | $32.94 |
| Kansas | 15.47 | $33.86 |
| Montana | 15.57 | $34.08 |
| South Carolina | 15.76 | $34.50 |
FAQ
How much does it cost to run a window air conditioner in South Dakota?
At 900 W and 15.15¢/kWh: $0.14 per hour, $1.09 per day and $33.16 per month at 8 h/day.
How does South Dakota 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 South Dakota
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