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-   -   Noise in water lines (https://www.askmehelpdesk.com/showthread.php?t=312497)

  • Feb 3, 2009, 12:13 PM
    hosek
    Noise in water lines
    I recently changed the heat element in the hot water tank and now when we flush the toilets or run water for very long we get a humming type sound that goes for a minute or so then seems to stop, it will also stop if we run a faucet but then starts when it is shuts off until its done.
  • Feb 3, 2009, 12:18 PM
    JJCH

    Sounds like a classic case of water hammer (water pressure too high). However, this should have nothing to do with changing a hot water tank element considering it's happening when you flush a toilet (toilet doesn't use hot water, ofcourse). When you shut the water off to the tank to change the element, did you use a shutoff valve to the tank, or did you shut the water off to the whole house?

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