drain line for furnace icing up

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  • December 26, 2015 at 4:57 pm #4012
    bigtreestechman
    Keymaster

    I had the same problem after we first installed central heat. Heat tape wrapped around the PVC drain line DID solve the problem! I did have to thaw the pipe the first time with a heat gun but over several years have never had a problem since putting on the heat tape.

    December 26, 2015 at 3:54 pm #4009
    guyo
    Participant

    I’ve used heat tape on PVC pipe for decades and never had a problem, although the smallest pipe I can recall using it on was 3/4″.

    December 26, 2015 at 9:10 am #4006
    rswheeler1
    Participant

    I don’t think heat tape would get hot enough to melt PVC, and some heat tapes have a thermostat that turns the tape on only when the temperature goes below 32. The packaging should have good info.
    Scott

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