Cost to Run a Window Air Conditioner in Connecticut
Connecticut's average residential electricity rate is 27.4¢/kWh as of May 2026 — the 44th cheapest in the country, 49% above the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $59.97 per month.
Per hour
$0.25
at 500–1,500 W
Per day
$1.97
8 hours/day
Per month
$59.97
219 kWh
Per year
$720
2,628 kWh
By usage level in Connecticut
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.99 | $29.99 | $360 |
| Typical (8 hrs/day) | $1.97 | $59.97 | $720 |
| Heavy (16 hrs/day) | $3.95 | $120 | $1,440 |
Connecticut 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 Connecticut?
At Connecticut's current average residential rate of 27.4¢/kWh (May 2026), a window air conditioner with typical usage costs about $1.97 per day, $59.97 per month, or $720 per year.
Is running a window air conditioner in Connecticut more expensive than average?
Yes. Connecticut's electricity costs about 49% more than the U.S. average, so the same usage costs $59.97 per month here versus $40.27 nationally.
What does electricity cost in Connecticut right now?
Connecticut residents pay an average of 27.4¢ per kWh as of May 2026 — the 44th cheapest rate of the 51 U.S. jurisdictions we track.