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Posted on Jan 02, 2017
Listen close near any check valve that may be in the piping system, as well as the pressure relief valve on tank. It may be a check valve rattling, but you normally will only experience that when water is flowing in and out of the system.
Posted on Apr 30, 2010
Every electric water heater I have ever installed makes a low hum while heating. I believe this is a combination of the current going through the elements and the minerals in the water cooking on the elements. That is the best explanation I have. Hope this helps.
Posted on May 13, 2010
SOURCE: I have an older Jacuzzi
I have the same problem. I talked to Jacuzzi technical support and they said that they don't sell a product that will retrofit (they make the couplings a custom size to prevent this.) It's really a drag since I really don't want to install a whole new tub just to maintain water temperature. I haven't given up so if you found a solution please post.
Posted on Apr 15, 2011
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