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  1. #1
    Join Date
    Oct 2009
    Posts
    57
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    The dinosaur is gone

    Today I change a Lennox g8137 furnace> the damm thing had the original gas valve and other controls. Only the blower motor was changed.
    Serial number was 66-12. Now this is well befor my time, havent even seen a g8 for 12 years and am not sure if the 66 is the year.

    I also changed the Honneywell T90 stat with the lennox name on it.

    Here is the catch. no visible cracks in the heat exchaner in the normal locations. If it was a g12 it would have been done.

    Home owner opted for a 80% but its still going to save some decent money

  2. #2
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,640
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    real steel in the HX..............not that crappy stamped stuff
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  3. #3
    Join Date
    Sep 2005
    Location
    Bay Area, CA
    Posts
    843
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    I still service gravity or retrofitted gravity furnaces that are 2-3 times older then me, built in the early 40's cant crack a steel heat exchanger it seems. Cost an arm and a leg to run too.
    Global Warming or: None like it hot
    No pleasure, no rapture, no exquisite sin greater... than central air. -Dogma

  4. #4
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,927
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    I always thought the G12 was steel.

    G8s were manufactured in canada until the early 90s. (design probably revised a few times - larger blowers for a/c and electronic ignition)
    I've discovered a natural law - everything gets progressively worse. Things only break down and become depleted. Life isn't worth living and everything is going to hell.

    Death is the messiah. Everything else is irrelevant and arbitrary.

  5. #5
    Join Date
    Oct 2009
    Posts
    57
    Post Likes
    standing pilot, belt drive on this baby.

    lennox would be so proud

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