Cost to run a electric water heater
Short answer
Running a electric water heater (~4000W, ~3 hrs/day) costs about $2.02/day, $61/month, or $736/year at the U.S. average of 16.8¢/kWh.
Wattage
4000 W
Per day
$2.02
Per month
$61
Per year
$736
Figures assume ~4000W for ~3 hours a day at the U.S. average 16.8¢/kWh. Your state's rate and your real usage change the total — enter both in the calculator.
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Frequently asked questions
How much does it cost to run a electric water heater?
About $2.02 per day, $61 per month, or $736 per year at the U.S. average of 16.8¢/kWh, assuming ~4000W for ~3 hours a day.
How many watts does a electric water heater use?
A typical electric water heater draws about 4000 watts when running. Your model may differ — check its label or a plug-in power meter and enter the real number in the calculator.
How can I cut the cost of running a electric water heater?
Run it less, use a more efficient model, and check whether your utility offers cheaper off-peak (time-of-use) rates. Costs also vary 4× by state, so your local rate matters a lot.