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Thread: HVAC Gurus

  1. #1
    Join Date
    May 2003
    Location
    Fredericksburg, VA
    Posts
    1,900

    HVAC Gurus

    I have JDS air cleaner in my shop and it has a "horse hair" final filter. Which side is supposed for face the air flow, the rough side or the smooth side?

    Thanks.
    If sawdust were gold, I'd be rich!

    Byron Trantham
    Fredericksburg, VA
    WUD WKR1

  2. #2
    Join Date
    Jun 2008
    Location
    Lubbock Texas
    Posts
    931
    I am not familiar with the filter you mentioned but air filters are made to have the air flow over the less dense surface first.
    No PHD, but I have a DD 214

  3. Rough side gets the air first. More surface area to trap dirt that way.

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