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Cost to run an electric water heater in Washington
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$0.59/hour
Electric Water Heater at 4,000 W in Washington (14.63¢/kWh) · $53.37/month at 3 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.59 | $17.79 | $213.60 |
| 2 h/day | $1.17 | $35.58 | $427.20 |
| 3 h/day | $1.76 | $53.37 | $640.79 |
| 4 h/day | $2.34 | $71.16 | $854.39 |
| 8 h/day | $4.68 | $142.32 | $1,708.78 |
| 12 h/day | $7.02 | $213.48 | $2,563.18 |
| 24 h/day | $14.04 | $426.96 | $5,126.35 |
Tank water heaters use 3,000-5,500 W elements; a family typically runs them 2-4 hours a day. Heat-pump models use about a third.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Washington | 14.63 | $53.37 |
| Arkansas | 14.37 | $52.42 |
| Mississippi | 14.43 | $52.64 |
| Wyoming | 14.43 | $52.64 |
| Oklahoma | 14.82 | $54.06 |
| North Carolina | 14.95 | $54.54 |
| Florida | 14.99 | $54.68 |
FAQ
How much does it cost to run an electric water heater in Washington?
At 4,000 W and 14.63¢/kWh: $0.59 per hour, $1.76 per day and $53.37 per month at 3 h/day.
How does Washington compare with other states?
The same use costs $46.40/month in Nevada (cheapest) and $172.11/month in Hawaii (most expensive); the US average is $66.25.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Electric Water Heater cost calculator · Electricity cost in Washington
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