This process removes sediment or buildup that collects on the bottom of the water heater tank.

This buildup makes the water heater work harder, using more energy and costing more to run.

Learn how to drain your water heaterto save energy and money and to increase the unit’s lifespan.

Yellow garden hose and screwdriver for draining water heater

The Spruce / Kevin Norris

Warning

How Often to Drain a Water Heater

Drain the water heater once a year.

Turn off the water heater several hours before you plan to drain it.

Wear heavy-duty rubber work gloves andsafety glasses.

Materials and tools to drain a water heater

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bring up the Drain Valve

Open up the drain valve with yourgarden hoseattached.

you’re able to do this by hand, but you may need to use your flat-head screwdriver.

As the bucket fills, turn off the drain valve so that you’re able to dump it.

Turn Off Circuit Breaker

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Repeat the process until the water runs clear.

Within an hour or so, you should have hot water.

It is necessary to drain a water heater.

Garden hose connected to drain valve on water heater

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You cannot drain your water heater without turning off the water.

However, it is not necessary to turn off the main water supply to the entire house.

You’ll find an in-line water shut-off valve near the water heater.

Cold water pipe turned off with shutoff valve

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Drain valve opened with flat-head screwdriver on water heater

The Spruce / Kevin Norris

Shutoff valve turned on to flush water heater tank

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Water heater refilled with garden hose attached

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Power switch turned on to relight water heater

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Water heater drain valve checked for leaks

The Spruce / Kevin Norris