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    shablue55's Avatar
    shablue55 Posts: 61, Reputation: 1
    Junior Member
    		  
    #1

    Aug 16, 2009, 01:30 PM
    Furnace filters
    If there are no arrows on an air filter for your furnace how do you know which way to put it in.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Aug 16, 2009, 03:51 PM

    Can you post a pic of your filter. Most likely, if they don't have an arrow, then it doesn't matter which way you install it. Looking forward to the pic. Lee.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #3

    Aug 17, 2009, 02:11 PM
    If your filter has a mesh on it or on one side, that side goes toward the furnace,as that is the stronger side of the filter,, hope this helps
    RConklin11's Avatar
    RConklin11 Posts: 2, Reputation: 1
    New Member
    		  
    #4

    Aug 30, 2009, 01:16 PM
    We cannot find the furnace filter on our Lennox electric HP25-311-2P unit. Where is it?!
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #5

    Aug 30, 2009, 06:22 PM
    Somewhere, in the return air ducts, or inside close to the blower,or inside the gigger return vent,, or maybe someone took t out and threw it away, in this case you need to get one
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