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    fegley's Avatar
    fegley Posts: 1, Reputation: 1
    New Member

    Nov 12, 2006, 04:59 PM
    Goodman Furnace
    How old is my Goodman furnace and how efficient is it?
    Model GUEQ80-4REVS
    Serial #910482720
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member

    Nov 12, 2006, 09:10 PM
    Call a local goodman dealer. I don't have a Preston's guide here at home to look up model years and efficiencies. If it has a draft inducer motor it is 80+%. If it has PVC flue pipes it is 90+%. If it has no inducer motor and a metal flue it is -70%.
    furnaceman1's Avatar
    furnaceman1 Posts: 1, Reputation: 1
    New Member

    Jan 17, 2011, 06:57 PM
    The first 2 # of the serial is the year the furnace was made they claim it is only 30 days and the furnace is in opration the first 2 # is how they keep track of the warranty

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