Cost to Run a Evaporative (Swamp) Cooler in Massachusetts
Massachusetts's average residential electricity rate is 28.8¢/kWh as of May 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 $28.02 per month.
Per hour
$0.12
at 100–800 W
Per day
$0.92
8 hours/day
Per month
$28.02
97 kWh
Per year
$336
1,168 kWh
By usage level in Massachusetts
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.46 | $14.01 | $168 |
| Typical (8 hrs/day) | $0.92 | $28.02 | $336 |
| Heavy (16 hrs/day) | $1.84 | $56.03 | $673 |
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 28.8¢/kWh (May 2026), a evaporative (swamp) cooler with typical usage costs about $0.92 per day, $28.02 per month, or $336 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 $28.02 per month here versus $17.90 nationally.
What does electricity cost in Massachusetts right now?
Massachusetts residents pay an average of 28.8¢ per kWh as of May 2026 — the 47th cheapest rate of the 51 U.S. jurisdictions we track.