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  1. #1
    Join Date
    Nov 2005
    I have a Trane XV80 with downflow furnace filters. According to the Trane manual I am suppose to install 2 filters in a V position (as shown in the help file):


    1) Do I need to do this? When I moved in to this house there was a single 16 X 20 X 1 filter laying across. I have been using a single filter for the past year (until I finally read the manual).

    2) Are there any better filter systems I should use? The 16 X 20 X 1 filters seem very hooky. Even using 2 in the V seems clunky. Is it ok to buy a thicker filter say 16 X 20 X 2 or 4 and lay it across? Or will this mess up the furnace?


  2. #2
    Join Date
    Dec 2002
    Rochester, MN
    If the ductwork is already set up as you are now, you should be fine, just have to change the filter often.. Where the V it gives more surface area, and it lasts longer.

    If you need better air filtering, then you can step up to 4" media, The media lasts about 6 months.

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