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  1. #1
    Join Date
    Dec 2007
    Holladay, UT

    Default Armstrong furnace

    I did a 9 plex today and 5 of the furnaces were Armstrong. The serial # was F, that's it F. The age of building is 1955. Anyone know the age of these. I couldn't find them on the normal reference I use. They all need replacement. Thanks.

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  2. #2
    Join Date
    Mar 2007
    Lake Barrington, IL

    Default Re: Armstrong furnace

    Can't help you with that info - doesn't correlate with the Armstrong S/N designations I have.

    Eric Barker, ACI
    Lake Barrington, IL


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