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Lower your water heater to 120°F to save energy

The U.S. Department of Energy says most homes only need 120°F.

MoneyTakes 10 minutesFree

Updated October 24, 2026

How to do it

0 of 4 steps done

Tap each step as you finish it.

1Find the temperature dial on your water heater, usually near the bottom on gas heaters.
2Turn it down to 120°F. Many dials show a mark or the word Warm or Normal instead of numbers.
3Wait a day, then check hot water at the tap with a kitchen thermometer.
4Adjust a little until it reads about 120°F.

Good to knowFor electric heaters, turn off the power at the breaker before opening the thermostat panel. If someone in your home has a weakened immune system, ask a doctor first, since the DOE notes a very small bacteria risk at lower temperatures.

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