Water Heater Recirculation Pump Making Noise

Some water heaters have an exhaust blower and they can be a bit noisy.

Water heater recirculation pump making noise.

I had a noisy hot water circulation pump after replacing a few other heating system components. Hot water recirculation pumps sometimes have a very small motor which means that they can t produce much head pressure. Zone circulator noise repair. If you hear noise coming from your hot water recirculation pump that isn t a good sign.

We distinguish among buzzing relays that control the circulator vibrating electric motors shrieking circulator bearings and circulator pump noises. The noise coming from your recirculation pump could also mean that the bearings are wearing out in which case you will need to replace the pump before it completely fails. Such a blower would run whenever the water heater s burner is running which would occur from time to time anyway but especially after you ve used hot water. Low flow rate sometimes hot water recirculation pumps have small motors which are unable to produce sufficient head pressure.

The air will need to be bled out of the system. If there has been a power outage or air has gotten into the line for some reason the pump can make a lot of noise. The pump has an internal check valve and there is a separate check valve on the cold water supply line to the water heater. Install a water hammer arrestor between the offending device and the water heater.

The noise is not dangerous to your water heater but could lead to eventual wall damage if it is not corrected. This can negatively impact the flow rate. I have run 1000 experiments to try to figure out the problem. This made no sense since i didn t think i changed anything th.

Air in the line. This can be caused by a dishwasher or toilet bowl or by a water pump without a holding tank. Zone circulator pump repair procedures for noises. The noise still starts every time the pump cycles on.