Cost to Run a Evaporative (Swamp) Cooler in Massachusetts
Massachusetts's average residential electricity rate is 29.5¢/kWh as of April 2026 — the 47th cheapest in the country, 57% above the U.S. average. At typical usage (8 hours/day), a evaporative (swamp) cooler here costs $28.70 per month.
Per hour
$0.12
at 100–800 W
Per day
$0.94
8 hours/day
Per month
$28.70
97 kWh
Per year
$345
1,168 kWh
By usage level in Massachusetts
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.47 | $14.35 | $172 |
| Typical (8 hrs/day) | $0.94 | $28.70 | $345 |
| Heavy (16 hrs/day) | $1.89 | $57.40 | $689 |
Massachusetts 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 Massachusetts?
At Massachusetts's current average residential rate of 29.5¢/kWh (April 2026), a evaporative (swamp) cooler with typical usage costs about $0.94 per day, $28.70 per month, or $345 per year.
Is running a evaporative (swamp) cooler in Massachusetts more expensive than average?
Yes. Massachusetts's electricity costs about 57% more than the U.S. average, so the same usage costs $28.70 per month here versus $18.29 nationally.
What does electricity cost in Massachusetts right now?
Massachusetts residents pay an average of 29.5¢ per kWh as of April 2026 — the 47th cheapest rate of the 51 U.S. jurisdictions we track.