Hot Water Heater Sounds

by Sherm Turner

Dear Sherm,
Whenever I use a lot of hot water, afterward when I turn on a hot water valve anywhere in the house, I get a surge of pressure and a loud gurgling sound inside the waterheater. The water heater is only 1 year old. I replaced the main line pressure regulator and it is set at 50psi. I have bled the pipes and I dont think there's air in the system. What could be causing this problem? The waterheater is a Reliance 501 gas heater. The pressure reducer is a Case-Acme. The house was built in 1985. Any suggestions?
Tired of Gurgling

Dear Tired,
It sounds like you need to install a thermal expansion device. In plumbing it is called "shock control absorber" and allows for expansion and contraction. That should eliminate the gurgling.

Sherm Turner is a Master Plumber with over 30 years experience. "Ask the Master Plumber" is his way of encouraging people to help the disabled, elderly, handicapped and children. If you have a question for Sherm, email it to him at: If you've benefited from his advice, please send a free will donation, on his behalf, to a favorite charity.

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