Water – How to stop the loud banging sound in the water pipes when using the clothes washer

water hammer

We just bought a townhome and every time we use the LG Front loading washing machine there is a loud bang throughout the pipe system. I checked the back and there are already 2 water hammer arrestors (Size AA) installed on the inlet to the washing machine's hot and colt water intakes. When I checked the water pressure of the cold water it was at 80psi. Does the banging have something to do with the water pressure or could I need bigger Water Hammer Arrestors? We are on a municipal water supply.

Best Answer

You may need to replace the arrestors.. they do fail eventually. Also even with them in place there may be poorly secured pipes that bang around. Try to find them and secure them properly.