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Gregg Austensen
09-04-2007, 08:53 AM
Can anyone help put an age on this York unit?

S/N WMHP353638

Thanks!!

John Brown
09-04-2007, 09:50 AM
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

Brian E Kelly
09-04-2007, 02:06 PM
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.