Cost to Run a Window Air Conditioner in New Hampshire
New Hampshire's average residential electricity rate is 27.3¢/kWh as of May 2026 — the 43rd cheapest in the country, 48% above the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $59.75 per month.
Per hour
$0.25
at 500–1,500 W
Per day
$1.97
8 hours/day
Per month
$59.75
219 kWh
Per year
$717
2,628 kWh
By usage level in New Hampshire
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.98 | $29.88 | $359 |
| Typical (8 hrs/day) | $1.97 | $59.75 | $717 |
| Heavy (16 hrs/day) | $3.93 | $120 | $1,435 |
New Hampshire vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in New Hampshire?
At New Hampshire's current average residential rate of 27.3¢/kWh (May 2026), a window air conditioner with typical usage costs about $1.97 per day, $59.75 per month, or $717 per year.
Is running a window air conditioner in New Hampshire more expensive than average?
Yes. New Hampshire's electricity costs about 48% more than the U.S. average, so the same usage costs $59.75 per month here versus $40.27 nationally.
What does electricity cost in New Hampshire right now?
New Hampshire residents pay an average of 27.3¢ per kWh as of May 2026 — the 43rd cheapest rate of the 51 U.S. jurisdictions we track.