Pipe freeze protection cable

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by dave1909, May 30, 2013.

  1. dave1909

    dave1909 New Member

    May 30, 2013
    Hello ,
    I need some advice,
    I will install a pipe freeze protection cable on my pipe.I will like to know your opinion on the best place to put the cable heat thermostat.In the installation instruction we can read" the thermostat should be placed on the coldest end of the pipe". The problem is that if I put the thermostat
    where my pipe froze last year (see the picture to know where) ... this portion of the pipe will not be heat , so this portion of the pipe will retain cold and never been heat...
    so my pipe had chance to freeze again next winter.
    I'm confused .... where is the best place to put the thermostat if you look at my plan?


  2. leejosepho

    leejosepho DIY scratch-pad engineer

    Nov 23, 2006
    disabled-retired industrial fabricator
    200 miles south of Little Rock
    The spot you have marked might be the lowest part that froze, but everything above that would have frozen before that even though it might have thawed before you began digging down to the part that was still frozen. Placing your thermostat at the frost line (the deepest spot where the ground freezes) would assure the lowest possible spot could not freeze, but freezing would actually begin above that point and work its way down...and I think that is what you are concerned about (just as I would be). So, I would place the thermostsat just above ground level (where freezing air would find it right away) and then be sure the heat tape began at the frost line and went all the way to the floor with pipe and tape all nicely wrapped with insulation.
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  4. Gary Swart

    Gary Swart In the Trades

    Sep 1, 2004
    Yakima WA
    Keep in mind that insulation alone will not keep the pipes from freezing. Insulation around the heat tape will slow the heat loss from the tape. That's why you need both heat tape and insulation.
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    Not all heat tape can be buried in insulation...read the instructions carefully, or risk either burning out the cable or burning down the trailer.
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