Cost to Run a Central Air Conditioner in California
California's average residential electricity rate is 33.6¢/kWh as of July 2026 — the 50th cheapest in the country, 84% above the U.S. average. At typical usage (8 hours/day), a central air conditioner here costs $286 per month.
Per hour
$1.18
at 2,000–5,000 W
Per day
$9.41
8 hours/day
Per month
$286
851 kWh
Per year
$3,434
10,220 kWh
By usage level in California
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $4.70 | $143 | $1,717 |
| Typical (8 hrs/day) | $9.41 | $286 | $3,434 |
| Heavy (16 hrs/day) | $18.82 | $572 | $6,868 |
California 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 California?
At California's current average residential rate of 33.6¢/kWh (July 2026), a central air conditioner with typical usage costs about $9.41 per day, $286 per month, or $3,434 per year.
Is running a central air conditioner in California more expensive than average?
Yes. California's electricity costs about 84% more than the U.S. average, so the same usage costs $286 per month here versus $156 nationally.
What does electricity cost in California right now?
California residents pay an average of 33.6¢ per kWh as of July 2026 — the 50th cheapest rate of the 51 U.S. jurisdictions we track.