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  1. #1

    Question Flex liner Weather King 80 Plus Upflow Gas furnaces

    I have a Weather King 80 Plus Upflow Gas furnaces Just found out that I need a chimney liner all I can fit in the chimney is a 4” flex liner the space is 4.25x19 that I have to shove it through and at the lower part of the chimney its 4” exactly for about 3 feet my question is on the paperwork for the unit is has vent 6 (152) may be 1” (25mm) with type b vent. Can I use the 4” flex liner for a happy medium. The unit has a power vent on it. There is a 3” vent pipe that comes off the unit and into the chimney. On the paperwork it has May require a 3” to 4” or 3” to 5” adapter I’m going to be using 4” double wall aluminum liner. I will like to order the liner but I dont want to get it if it will not work cant tack it back after its used Thanks for the help. sorry I also posted this in general

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,777
    Best to have an on site tech see what can be done.
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    How many times must one fix something before it is fixed?

  3. #3
    I did he is telling me 4" is good for it. Tuesday its going to get installed so I will see if it works. He told me i can go with 3" if I wanted.

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,601
    Get a CO detector! You'll need it.

  5. #5
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    799
    why do you have to get a chimney liner??

  6. #6
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    799
    Quote Originally Posted by BaldLoonie View Post
    Get a CO detector! You'll need it.
    CO monitor* stay away from that UL listed junk.

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