Cost to Run a Window Air Conditioner 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 window air conditioner here costs $64.57 per month.
Per hour
$0.27
at 500–1,500 W
Per day
$2.12
8 hours/day
Per month
$64.57
219 kWh
Per year
$775
2,628 kWh
By usage level in Massachusetts
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $1.06 | $32.28 | $388 |
| Typical (8 hrs/day) | $2.12 | $64.57 | $775 |
| Heavy (16 hrs/day) | $4.25 | $129 | $1,551 |
Massachusetts 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 Massachusetts?
At Massachusetts's current average residential rate of 29.5¢/kWh (April 2026), a window air conditioner with typical usage costs about $2.12 per day, $64.57 per month, or $775 per year.
Is running a window air conditioner in Massachusetts more expensive than average?
Yes. Massachusetts's electricity costs about 57% more than the U.S. average, so the same usage costs $64.57 per month here versus $41.15 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.