Cost to Run a Evaporative (Swamp) Cooler in Massachusetts
Massachusetts's average residential electricity rate is 30.5¢/kWh as of July 2026 — the 48th cheapest in the country, 67% above the U.S. average. At typical usage (8 hours/day), a evaporative (swamp) cooler here costs $29.67 per month.
Per hour
$0.12
at 100–800 W
Per day
$0.98
8 hours/day
Per month
$29.67
97 kWh
Per year
$356
1,168 kWh
By usage level in Massachusetts
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.49 | $14.84 | $178 |
| Typical (8 hrs/day) | $0.98 | $29.67 | $356 |
| Heavy (16 hrs/day) | $1.95 | $59.34 | $712 |
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 30.5¢/kWh (July 2026), a evaporative (swamp) cooler with typical usage costs about $0.98 per day, $29.67 per month, or $356 per year.
Is running a evaporative (swamp) cooler in Massachusetts more expensive than average?
Yes. Massachusetts's electricity costs about 67% more than the U.S. average, so the same usage costs $29.67 per month here versus $17.80 nationally.
What does electricity cost in Massachusetts right now?
Massachusetts residents pay an average of 30.5¢ per kWh as of July 2026 — the 48th cheapest rate of the 51 U.S. jurisdictions we track.