J Jim Jones New Member Messages 1 Reaction score 0 Points 0 May 31, 2009 #1 The domestic hot water circulation pump has begun to make a vibrating noise in the wall. Pump was replaced and it is still there. The house is 19 years old and supposedly this is a new problem. Help
The domestic hot water circulation pump has begun to make a vibrating noise in the wall. Pump was replaced and it is still there. The house is 19 years old and supposedly this is a new problem. Help
Jadnashua Retired Defense Industry Engineer xxx Messages 32,770 Reaction score 1,195 Points 113 Location New England May 31, 2009 #2 Make sure that any valves are fully open. Also, the checkvalve may be sticking, creating a flow restriction, making the pump work harder.
Make sure that any valves are fully open. Also, the checkvalve may be sticking, creating a flow restriction, making the pump work harder.
