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Cost to run a central air conditioner in New Hampshire
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$0.97/hour
Central Air Conditioner at 3,500 W in New Hampshire (27.64¢/kWh) · $235.27/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.97 | $29.41 | $353.10 |
| 2 h/day | $1.93 | $58.82 | $706.20 |
| 4 h/day | $3.87 | $117.64 | $1,412.40 |
| 8 h/day | $7.74 | $235.27 | $2,824.81 |
| 12 h/day | $11.61 | $352.91 | $4,237.21 |
| 24 h/day | $23.22 | $705.82 | $8,474.42 |
A 3-ton central AC typically draws 3,000-4,000 W while running; SEER rating and duct losses matter.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| New Hampshire | 27.64 | $235.27 |
| Connecticut | 24.51 | $208.63 |
| New Jersey | 24.61 | $209.48 |
| District of Columbia | 25.98 | $221.14 |
| Rhode Island | 28.18 | $239.87 |
| New York | 28.65 | $243.87 |
| Alaska | 29.41 | $250.34 |
FAQ
How much does it cost to run a central air conditioner in New Hampshire?
At 3,500 W and 27.64¢/kWh: $0.97 per hour, $7.74 per day and $235.27 per month at 8 h/day.
How does New Hampshire compare with other states?
The same use costs $108.27/month in Nevada (cheapest) and $401.60/month in Hawaii (most expensive); the US average is $154.58.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Central Air Conditioner cost calculator · Electricity cost in New Hampshire
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