Cost to Run a Central 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 central air conditioner here costs $233 per month.
Per hour
$0.96
at 2,000–5,000 W
Per day
$7.67
8 hours/day
Per month
$233
851 kWh
Per year
$2,800
10,220 kWh
By usage level in Connecticut
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $3.84 | $117 | $1,400 |
| Typical (8 hrs/day) | $7.67 | $233 | $2,800 |
| Heavy (16 hrs/day) | $15.34 | $466 | $5,601 |
Connecticut vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a central air conditioner in Connecticut?
At Connecticut's current average residential rate of 27.4¢/kWh (May 2026), a central air conditioner with typical usage costs about $7.67 per day, $233 per month, or $2,800 per year.
Is running a central 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 $233 per month here versus $157 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.