Cost to Run a Evaporative (Swamp) Cooler 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 evaporative (swamp) cooler here costs $26.56 per month.
Per hour
$0.11
at 100–800 W
Per day
$0.87
8 hours/day
Per month
$26.56
97 kWh
Per year
$319
1,168 kWh
By usage level in New Hampshire
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.44 | $13.28 | $159 |
| Typical (8 hrs/day) | $0.87 | $26.56 | $319 |
| Heavy (16 hrs/day) | $1.75 | $53.11 | $638 |
New Hampshire vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a evaporative (swamp) cooler in New Hampshire?
At New Hampshire's current average residential rate of 27.3¢/kWh (May 2026), a evaporative (swamp) cooler with typical usage costs about $0.87 per day, $26.56 per month, or $319 per year.
Is running a evaporative (swamp) cooler 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 $26.56 per month here versus $17.90 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.