Water Heater Making Noises

Water Heater Making Noises


The most frequent reason for a noisy water heater is sediment gathering at the bottom of the heater. The noise is caused when the hot water bubbles up via the sediment at the bottom of the tank. When this occurs, it reasons a popping sound.


Sediment Buildup Prevention

There are two approaches to stop sediment buildup in the first place.

  • Flush your water heater out periodically. To flush the sediment out of the tank, empty it, open the cold water intake and fill the water tank midway while permitting the flow of the water to rinse the sediment from interior the tank. Empty the water through the drain valve and repeat the method until you do no longer see any symptoms of sediment left in the tank.
  • Install a water softener in your home. The water softener will take away the sediment that builds up in your tank.

If left unchecked, the sediment buildup can lead to larger problems in the future. The most serious trouble that can take place is the backside of the tank can rust out and start leaking, which is frequently indicated through a rumbling sound. Once it begins to leak, changing the water heater is the only choice left.

Replacing the Water Heater


  1. Shut off the water provide to the water heater, additionally shut off the electrical power, if you have an electric powered water heater, or the gas provide if you have a fuel water heater.
  2. Drain the water out of the water heater tank with the aid of opening the valve at the bottom of the tank near the floor. It might also be useful to attach a garden hose to the drain valve and run it to a nearby drain to keep away from a massive mess.
  3. Once the tank is empty, you can disconnect the gas line, flue pipe and water lines for a gasoline water heater, or the strength wires and water strains for an electric-powered water heater.
  4. When the historical tank is out of the way, clean up the area to make it equipped for the new water heater, then you can set the new unit in place.
  5. Begin reconnecting the water lines, the gas or electric-powered furnish and the flue pipe for the fuel water heater. Make certain in the case of a gasoline water heater that you take a look at your fuel line joints with cleaning soap bubbles for gasoline leaks.
  6. Turn the gas/power on and commence refilling the water tank. For the fuel water heater, you ought to additionally understand to light the pilot light. You additionally favor to make positive that the thermostat is set to the temperature that you want; the most commonplacing is 120 F.


Other Causes of Noise

If sediment buildup isn’t the motive of the noise, think about these different possibilities:

  • If the comfort valve is completely closed, you may additionally hear a sizzling sound related to this issue.
  • Fluctuations in water stress can reason a ticking noise.
  • You can also additionally hear a ticking noise that is attributed to loose pipe straps that keep the hot water strains coming out of the water heater. You can give up the noise by way of inserting plastic spacers between the pipes, and the straps.
  • A sizzling sound can indicate water is leaking from the tank, and onto the warm burner assembly.

In addition, a hammering or knocking noise frequently indicates the water drift is being stopped suddenly. Most plumbing systems have built-in measures to manage this situation, such as some type of air cushion device in the plumbing lines.

However, water stress from the avenue might also fluctuate, and the air cushions may additionally become waterlogged, resulting in the hammering noise. This is not caused through the water heater, however, it can reason some serious injury to the unit.

One way to end this noise is to drain your complete plumbing gadget via turning off the water grant to the residence and then opening up all of the faucets to enable the air cushions to fill returned up. After a brief time, you can turn the water provide again on and close all of the faucets.

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