How to drain a water heater

Easy steps to drain the water heaters tank and remove any sediment that may have built up inside it and ensure optimal performance.

Step 1: Turn off the water supply

Step 2: Turn off the water heater

  • For a gas water heater, turn the thermostat to the “pilot” setting.
  • For an electric tater heater, turn completely off the electricity at the breaker box.

Careful, after turning off, the water in a heater tank may remain quite hot for hours, so either wait over night for the water to cool or be very cautious when draining the hot water.

Step 3: Attach hose to drain valve and open hot water tap

Near the bottom of the tank, locate the tank drain valve and attach a standard garden hose to the drain valve. Place the other end of the hose somewhere it can drain safely, for example use buckets. Open hot water tap nearest to the water heater. Be careful not to be burned by the hot water.

Step 4: Open drain valve

Near the bottom of the tank, locate the tank drain valve and attach a standard garden hose to the drain valve. Place the other end of the hose somewhere it can drain safely, for example use buckets. Open hot water tap nearest to the water heater.

Step 5: Close drain valve, refill tank

Close the drain valve, remove the hose and turn on the cold water supply. The tank will begin to fill. Go back to the hot water tap opened earlier. Once cold water begins to flow from the tap, turn it off. Turn the gas valve back on from the pilot position or turn electricity back on to the tank. Be sure to check the valve opening once it’s closed to ensure there are no water leaks.
If you need further assistance, call an Air Condition / Heating services expert. Let Chatibot on Messenger (click on m.me/chatibot) find you the best professional near you!