Cost to Run a Central Air Conditioner in Idaho
Idaho's average residential electricity rate is 13.7¢/kWh as of July 2026 — the 5th cheapest in the country, 25% below the U.S. average. At typical usage (8 hours/day), a central air conditioner here costs $117 per month.
Per hour
$0.48
at 2,000–5,000 W
Per day
$3.84
8 hours/day
Per month
$117
851 kWh
Per year
$1,400
10,220 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $1.92 | $58.31 | $700 |
| Typical (8 hrs/day) | $3.84 | $117 | $1,400 |
| Heavy (16 hrs/day) | $7.67 | $233 | $2,800 |
Idaho 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 Idaho?
At Idaho's current average residential rate of 13.7¢/kWh (July 2026), a central air conditioner with typical usage costs about $3.84 per day, $117 per month, or $1,400 per year.
Is running a central air conditioner in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 25% below the U.S. average: $117 per month here versus $156 nationally.
What does electricity cost in Idaho right now?
Idaho residents pay an average of 13.7¢ per kWh as of July 2026 — the 5th cheapest rate of the 51 U.S. jurisdictions we track.