Thread: AC unit age
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Old 09-04-2007, 10:50 AM
John Brown John Brown is offline
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Join Date: Mar 2007
Location: Gulf Coast, USA
Posts: 42
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.

JB
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