Electric Hot Water Heater Knocking

Both of these things can be dangerous for your device or even your whole plumbing network.

Electric hot water heater knocking. The popping noise is steam bubbles escaping the sediment. For electric water heaters. 3 connect a garden hose to the drain valve. 4 place the other end of the hose in an area like a basement drain where water can drain to and won t be hurt by hot water.

The element in an electric water heater is commonly placed vertical in relation to the tank. Turn the gas valve knob to pilot. Turn the cold water shut off valve to prevent more cold water from entering the water heater. When the water flow is abruptly stopped there s no place for the water to go within your household plumbing so it flows in reverse back to its original source.

The sound is due to the reduced volume in the tank which forces steam bubbles to rise as the burners heat the tank. For gas water heaters. In this case your water heater. Turn off the water heater.

99 of the time a water heater knocking or making noise is due to scaling or sediment deposits that come from hard water. Whether it be due to the facet the toilet or the shower the abrupt stop of water flow causes the pipes to move. The bubbles become trapped and rattle around the sediment at the bottom of the tank causing this knocking popping or rattling noise. Turn off the water heater at the circuit breaker.

We have found other sources for a noise that could be described as a knocking or popping. Normally this is enough to stop your water heater from making the knocking or popping noise. It s either a phenomenon known as a water hammer or plain old mineral buildup. Find out why your water heater is making banging noises whether you should be worried and what can you do about it.

The simple fix is to flush out your hot water tank. Let the water heater to cool down for about 30 minutes. If you have a gas water heater turn the temperature setting to pilot if you have an electric water heater turn off the water heater at the circuit breaker. 1 turn off the water heater.

Tighten the element slightly to correct the problem. Water flowing around the element can cause vibrations in this situation creating a humming noise. The main way we purge sediment in your water heater is by performing a sediment flush. During this simple procedure a vertex mechanical plumber flushes all of the loose sediment from the water heater.

2 turn the cold water supply lever to a 90 degree angle.