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    After about 1985, the serial numbers are much...

    After about 1985, the serial numbers are much easier [/QUOTE]

    Morse code is much easier than trying to read most of these serial numbers. :D
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    16,016

    I won't ponder a guess, but why do manufacturers...

    I won't ponder a guess, but why do manufacturers want to keep it such a secret what year equipment was built? I like the way Trane, Rheem and some Carrier models print clearly the month and year of...
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