Tankless Water Heater Noisy Pipes

The sensor controls the amount of gas sent to the unit.

Tankless water heater noisy pipes.

If you hear a weird groaning sound from the pipes or the tankless hot water heater when you flush the toilet that could be the culprit. Another standard issue that causes loud noises in tankless water heaters is a dirty flow sensor. Other sources of noise include blocked or inadequate ventilation or a defective or improperly set pressure valve. In that case you need to have a plumber install a check valve in the water line.

Another common problem that can create noise in tankless water heaters is a dirty flow sensor which controls how much gas is sent to the unit. Even though a toilet only uses cold water i have seen some toilets do this. If the running water noise continues once the tank is filled you may want to call a professional plumber to investigate the situation for you. If your water heater is making noise like water is running you probably have a leak or a broken pipe.

Or you can try to run down the leak yourself by checking the following. Although keep in mind that it is normal to hear water entering the tank when hot water is being drawn. Good luck with your project. Water vapor is a byproduct of combustion although in this case the vapor contains elements such as methane nitrogen and oxygen.

Others reasons for a noisy tankless water heater model may be an issue with the burner the fan may be dirty or possibly a leak in the sealed combustion resulting in irregular gas combustion.