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  1. #1
    Join Date
    Oct 2005
    Location
    Hockessin,DE
    Posts
    88
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    What is the loss in efficiency when using a Bayvent or Chimney Vent kit? Would I be better off with a liner instead (aluminum or stainless)?

    I hear the loss with a Bayvent is about 2% from my contractor but one of the members here said its more like 10%.... and also that my heat-pump will be losing heat through the same as well...

    what's the collective opinion on this?

  2. #2
    Join Date
    Nov 2005
    Location
    Charlotte, N.C.
    Posts
    1,002
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    YOUR LOSE IN EFFICIENCY WILL BE RELATIVLY LOW BUT YOUR FURNACE IS BEING USED AS A AUX HEAT SOURCE. IT SHOULD'NT AFFECT YOUR HP.

    TREY

  3. #3
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    20,056
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    I believe the loss is 6-8%. You will no longer have an 80 AFUE furnace though. I was told this by a bryant rep. whos name I will keep quiet. Always run a chimney liner or you may suffer chimney damage and besides, you need one for the orphaned water heater anyway..unless it a direct vent.
    “Now the freaks are on television, the freaks are in the movies. And it’s no longer the sideshow, it’s the whole show. The colorful circus and the clowns and the elephants, for all intents and purposes, are gone, and we’re dealing only with the freaks.” - Jonathan Winters

  4. #4
    Join Date
    Oct 2005
    Location
    Hockessin,DE
    Posts
    88
    Post Likes

    Thank you! this helped me greatly

    I told him I wanted to do the aluminum liner and not the Bayvent kit.

    Th 6-8% loss in efficiency would more than pay for the liner in the first year itself.

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