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Cost to run an electric water heater in Iowa
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$0.68/hour
Electric Water Heater at 4,000 W in Iowa (17.06¢/kWh) · $62.23/month at 3 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.68 | $20.74 | $249.08 |
| 2 h/day | $1.36 | $41.49 | $498.15 |
| 3 h/day | $2.05 | $62.23 | $747.23 |
| 4 h/day | $2.73 | $82.98 | $996.30 |
| 8 h/day | $5.46 | $165.96 | $1,992.61 |
| 12 h/day | $8.19 | $248.94 | $2,988.91 |
| 24 h/day | $16.38 | $497.88 | $5,977.82 |
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
FAQ
How much does it cost to run an electric water heater in Iowa?
At 4,000 W and 17.06¢/kWh: $0.68 per hour, $2.05 per day and $62.23 per month at 3 h/day.
How does Iowa 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 Iowa
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