SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/home-c-wh-flush

How often does EPA WaterSense suggest flushing your water heater to remove sediment?

Once a year, to reduce sediment buildup.

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  1. Every month
  2. Every five years
  3. Once a year ✔

Why: Minerals and sediment settle at the bottom of a tank water heater and can lower its efficiency. EPA WaterSense suggests flushing it once a year, after turning off the power supply.

Huh, didn't know that: WaterSense also suggests checking the temperature and pressure valve at least once a year to make sure it works correctly.

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References

Answer: Once a year. Minerals and sediment settle at the bottom of a tank water heater and can lower its efficiency. EPA WaterSense suggests flushing it once a year, after turning off the power supply.

  1. EPA WaterSense: Home Maintenance www.epa.gov/watersense/home-maintenance
    Once a year, flush your water heater to reduce sediment buildup which can decrease efficiency.
    Checked 2026-10-10.

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