Ask Bob Home Maintenance How often should I flush my water heater?

How often should I flush my water heater?

By Bob Millaway, South Jersey Community Expert & REALTOR®

Flush your water heater once a year to remove sediment buildup that reduces efficiency and can cause premature failure. Turn off the power or gas, attach a hose to the drain valve, and let it run until water runs clear. Check the anode rod every three years and replace if corroded.

Why It Matters

Annual flushing extends your water heater's lifespan, improves energy efficiency, and prevents sediment-related issues.

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