hot water heater's making a knocking noise

Old 07-14-00, 05:12 PM
Visiting Guest
Posts: n/a

when i touched the hot water pipe going from the tank to the wall, i could feel the tapping or knocking that seems to match the sound. i want to release pressure from the pressure valve?? not sure. what should i be doing - aside from calling a plumber at this hour of the night?

Old 07-14-00, 06:56 PM
Visiting Guest
Posts: n/a

Just open a hot water valve someplace in the house and that should end the knocking. The cause is thermal expansion. How high is the temp. set on the water heater?

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: