Exeptional Plumbing Services Since 1985
Man draining water heater.

How to Flush Out Your Water Heater

Flushing your hot water heater is a task you likely don't think about doing regularly. However, sediment from the water can build up over time and cause the heater to run less efficiently.

Fortunately, the process is simple and straightforward. You can follow the steps below to have the task done in no time.

1. Turn Everything Off

Find the thermostat knob near the bottom of your tank and turn it to the "off" position. After this, look for the cold water supply valve near the top of the tank and turn this off as well.

If you have gas, you'll need to turn off the gas valve running to the tank. If you have electricity, find the hot water heater switch in your breaker box and switch it off.

2. Turn on the Hot Water

Let the hot water run in your sink or bathtub during the flushing process to keep a vacuum from forming when you drain the water tank.

3. Open the Pressure Release Valve

Opening this valve makes the draining process easier. Place a bucket under the valve and carefully open it. Be prepared for hot water to rush out.

Let the water in the tank cool down before proceeding to the final steps.

4. Connect a Hose to the Drainage Spigot

Be sure to place the unconnected end of the hose either in a bucket or in your yard, and turn the spigot on so that the water can drain out.

Let the water drain until it runs clear, and then turn the cold water back on to allow fresh water to run through the tank until there is no sediment left.

5. Finish Up

Once you're finished, simply work back through the steps above to put everything back in order. Remember to open the pressure valve and sink spigot once the tank is full of heated water again to remove air from the lines.

Unless you have particularly hard water, you should only have to do this about once a year to prolong the life of your hot water heater and keep your water pressure strong.

If you run into any complications, contact Arneson Plumbing & Heating at (310) 982-2374.