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Cost to run an electric water heater in Pennsylvania
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$0.87/hour
Electric Water Heater at 4,000 W in Pennsylvania (21.77¢/kWh) · $79.42/month at 3 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.87 | $26.47 | $317.84 |
| 2 h/day | $1.74 | $52.94 | $635.68 |
| 3 h/day | $2.61 | $79.42 | $953.53 |
| 4 h/day | $3.48 | $105.89 | $1,271.37 |
| 8 h/day | $6.97 | $211.78 | $2,542.74 |
| 12 h/day | $10.45 | $317.67 | $3,814.10 |
| 24 h/day | $20.90 | $635.34 | $7,628.21 |
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 |
|---|---|---|
| Pennsylvania | 21.77 | $79.42 |
| Ohio | 19.38 | $70.70 |
| Wisconsin | 19.41 | $70.81 |
| Maryland | 21.40 | $78.07 |
| Michigan | 22.99 | $83.87 |
| Vermont | 23.84 | $86.97 |
| Connecticut | 24.51 | $89.41 |
FAQ
How much does it cost to run an electric water heater in Pennsylvania?
At 4,000 W and 21.77¢/kWh: $0.87 per hour, $2.61 per day and $79.42 per month at 3 h/day.
How does Pennsylvania 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 Pennsylvania
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