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  1. #1

    Question Need help decoding lennox htr age

    Hi, need help with age of horizontal lennox furnace, can't find it on any internet charts.
    m/n gs 1513/4x-80-3
    s/n 2325168724
    house built in 1988

    Mike Richards

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  2. #2
    Join Date
    Nov 2009
    St Paul, MN

    Default Re: Need help decoding lennox htr age

    I don't think you copied down the serial number correctly. It should be in a format like this:
    5187G 24232

    51 would be the Lennox division number
    87 would be the year manufactured
    G would be the month code
    24232 would be the serial number

    Do you have a picture?
    Minnesota Home Inspectors LLC
    ASHI #242887


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