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Thread: Low Hot water amount since main valve replacement. Volume seems fine

  1. #1
    DIY Junior Member RobPin's Avatar
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    Default Low Hot water amount since main valve replacement. Volume seems fine

    Hi I recently replaced the main shut off valve coming into the house. Since then I'm running out of hot water. This was never a problem before. The volume of water seems OK pressure wise but the amount of Hot water seems decreased and ends in half the time now.

    Any thoughts

    Thanks

    RobP

  2. #2
    DIYer, not in the trades LLigetfa's Avatar
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    If you have an electric water heater and did not turn off the breaker when the work was done, there is a distinct possibility that an element burned out. If you have a gas heater and it was turned off, it may have simply reverted to the default temperature and may need to be raised.

  3. #3
    DIY Junior Member RobPin's Avatar
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    Gas heater. Only shutoff cold water valve going into tank during draining of line, but turned it on afterwards. Thanks for reply

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    Forum Admin, Expert Plumber Terry's Avatar
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    I would check the temperature setting on the gas heater.

  5. #5
    DIY Junior Member RobPin's Avatar
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    Will increase. Could solder have traveled down the pipe and be stopped at the cold inlet (theory).

    Rob

  6. #6
    DIYer, not in the trades LLigetfa's Avatar
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    Many water heaters have heat traps in the nipples of the inlet and outlet. Sediment can prevent smooth movement of the ball of the heat trap that could in turn severely restrict the flow but those are not the symptoms you describe.

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