Lose of Heat Through Duct Work

Discussion in 'HVAC Heating & Cooling' started by River Rat, Dec 18, 2007.

  1. River Rat

    River Rat New Member

    Messages:
    21
    How can one stop the lose of heat through your heat ducts?

    I would like to make my Heat Ducts more effect but would like to know how one can do it?
  2. leejosepho

    leejosepho DIY scratch-pad engineer

    I have one duct running through unheated space, and I have wrapped that line with insulation. I have not insulated any of the others because any heat that radiates from them goes into heated space anyway. If you might have a cool/cold room at the end of the line, be sure its return is not in any way obstructed and/or possibly damper other rooms a little to force more warm air out to the end.
  3. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,804
    Location:
    New England
    The biggest problem with ducts is leaks. Do NOT use fabric duct tape; it will dry out and leak, plus leave a residue. They make a metal self-stick tape that works quite well for this. It has a paper release on the back so it unrolls off the roll well.

    The ducts can be insulated with wrap or solid insulation.
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