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Thread: AC unit age

  1. #1
    Gregg Austensen's Avatar
    Gregg Austensen Guest

  2. #2
    John Brown's Avatar
    John Brown Guest

    Default Re: AC unit age

    York uses third letter of S/N.

    H= 1999.

    "A" starts at 1992, and so on.

    More recent labels tend to have an actual date on the bottom right.


  3. #3
    Brian E Kelly's Avatar
    Brian E Kelly Guest

    Default Re: AC unit age

    The unit was manufactured in Nov. of 1999 the second letter is the month a=Jan and so on. Ane the third letter is the year. Modern A starts at 1992 and pre 92 the A starts at 1971.


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