Hot water pressure lowers when another faucet opens.

Discussion in 'Shower & Bathtub Forum & Blog' started by, Nov 17, 2008.

  1. New Member

    Nov 17, 2008
    If I am in the shower and my wife uses the bathroom sink, the hot water in the shower will decrease until she is finished.

    I had the hot water tank replace 4 years ago and this is when it started. Prior I had no problem.
  2. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    I would suspect the valve that is on the supply to the water heater to be the problem. It is probably either not open all the way or, it make be a gate valve broken in the partially closed position.

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