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  1. #1
    Join Date
    Apr 2013
    Posts
    1

    Default hot water temperature difference

    What could be causing the hot water temperature to vary by 20 degrees between upstairs and downstairs outlets? Upstairs is the cooler and farthest from source.
    Gas fired hot water heater of sufficient size. No excessive usage. New Jersey weather has not been unusually cold. The problem seems to come and go and it does not seem to be solved by adjusting the thermostat on heater.

  2. #2
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,168

    Default Re: hot water temperature difference

    The main cause for your problem is a cross connection. The main cause of a cross connection between the hot and cold is a failed cartridge in a single lever tub or shower faucet.
    John

  3. #3
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,103

    Default Re: hot water temperature difference

    What kind of faucet is it? one handle, two handles or something else?

    What kind of pipes do you have? galvanized, copper or something else?

  4. #4
    Join Date
    Sep 2012
    Location
    Boston
    Posts
    829

    Default Re: hot water temperature difference

    Quote Originally Posted by plumbingmesagateway View Post
    You need to know, then, what to look for in both a well-made, and a shoddily made pipe, so that you can tell the difference, and buy only those pipes that are well made.
    what does that mean? makes no sense to me

  5. #5
    Join Date
    Oct 2012
    Location
    Houston, TX
    Posts
    236

    Default Re: hot water temperature difference

    Quote Originally Posted by MLB Construction View Post
    what does that mean? makes no sense to me
    It means a writer is getting paid to write nonsense posts with the intent of plugging a website instead of a spambot of course.
    It's this old house, not this built after your dad was born house.

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