Is your Water Heater Noisy?

Having a loud, noisy water heater is mostly a nuisance but it can also mean there is a problem. As a water heater ages, sediment accumulates at the bottom of the tank which can cause it to make noise. This is especially true if the water heater has not been drained on a regular basis.

Water Heater Sediment

Rumbling or Banging Noises

The noises described as “rumbling”or “banging” are usually the sound of expanding, heated water escaping from sediment at the bottom of the tank. This situation is not dangerous.  However, it is a sign that the water heater has lost much of it’s efficiency.

As sediment builds up, more and more heat is lost up the chimney and less heat gets into your water. The overheating at the bottom of the tank reduces the life of the water heater and can lead to failure.

Certain geographical areas are notorious for “bad” water. In these areas it is particularly helpful to periodically flush your water heater to prolong it’s useful life.  Flushing your water can also save you money on energy costs. However, once sediment is allowed to build up and solidify, it becomes like coral.  At this point it will be almost impossible to remove from residential model water heaters. If the sediment can be flushed out, it should fix the problem. If not, it may be time to replace your water heater.

High Pitched Noise or Screeching from the Tank

A screeching or high pitched noise from your water heater can be the result of high incoming water pressure. This should be diagnosed and repaired as quickly as possible. Water heaters are designed with a temperature / pressure relief safety valve. This valve is designed to open and release water when the temperature is too high or if there is an excess buildup of pressure inside the tank. 

A temperature / pressure relief safety valve that fails to open can cause the water heater to become over pressurized. Long term excess pressure in the plumbing system or water heater can lead to cracks, leaks and in very rare cases, a burst water heater.

Our water heater experts are available 24 hours a day to discuss your noisy water heater problem. Call 1-800-835-8041 to schedule an appointment or to speak with a water heater expert today.