Cost to Run a Heat Pump Water Heater in Washington
Washington's average residential electricity rate is 14.4¢/kWh as of April 2026 — the 12th cheapest in the country, 23% below the U.S. average. At typical usage (3 hours/day), a heat pump water heater here costs $13.13 per month.
Per hour
$0.14
at 400–1,500 W
Per day
$0.43
3 hours/day
Per month
$13.13
91 kWh
Per year
$158
1,095 kWh
By usage level in Washington
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $0.22 | $6.57 | $78.84 |
| Typical (3 hrs/day) | $0.43 | $13.13 | $158 |
| Heavy (6 hrs/day) | $0.86 | $26.27 | $315 |
Washington vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a heat pump water heater in Washington?
At Washington's current average residential rate of 14.4¢/kWh (April 2026), a heat pump water heater with typical usage costs about $0.43 per day, $13.13 per month, or $158 per year.
Is running a heat pump water heater in Washington more expensive than average?
No — it's cheaper. Washington's rate is about 23% below the U.S. average: $13.13 per month here versus $17.15 nationally.
What does electricity cost in Washington right now?
Washington residents pay an average of 14.4¢ per kWh as of April 2026 — the 12th cheapest rate of the 51 U.S. jurisdictions we track.