Cost to Run a Oil-Filled Radiator Heater in California
California's average residential electricity rate is 33.3¢/kWh as of May 2026 — the 50th cheapest in the country, 81% above the U.S. average. At typical usage (8 hours/day), a oil-filled radiator heater here costs $121 per month.
Per hour
$0.50
at 700–1,500 W
Per day
$4.00
8 hours/day
Per month
$121
365 kWh
Per year
$1,459
4,380 kWh
By usage level in California
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $2.00 | $60.74 | $729 |
| Typical (8 hrs/day) | $4.00 | $121 | $1,459 |
| Heavy (16 hrs/day) | $7.99 | $243 | $2,917 |
California vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a oil-filled radiator heater in California?
At California's current average residential rate of 33.3¢/kWh (May 2026), a oil-filled radiator heater with typical usage costs about $4.00 per day, $121 per month, or $1,459 per year.
Is running a oil-filled radiator heater in California more expensive than average?
Yes. California's electricity costs about 81% more than the U.S. average, so the same usage costs $121 per month here versus $67.12 nationally.
What does electricity cost in California right now?
California residents pay an average of 33.3¢ per kWh as of May 2026 — the 50th cheapest rate of the 51 U.S. jurisdictions we track.