How To Read York Hvac Model And Serial Number

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York Hvac Serial and Model Number

York hvac had two different serial numbers for 1971 through 2004 and 2005 through the present day.

Old Serial Number from 1971 – October, 2004

Old Serial Number format look like this: XBFM220710, EADM203490, and BKJM310394.

New Serial Number from October, 2004 to the present day

New serial number format looks like this. W0E4298223, N0D6941103, and A0E5219381. York Hvac New Serial Number

Click the link in the bottom of the pages for question

Here how to read the old serial number: X B F M 220710

1st digits X is the plant. X was made in Mexican

A = Addison
B = Blackville
C = Canada
D = Medina
E = Elyria
M = Mad’ville
N = Norman
W = Wichita
X = Mexico
Y = York

2nd digits B are the month. B is in February

A = January
B = February
C = March
D = April
E = May
F = June
G = July
H = August
“I” was skipped
“J” was skipped
K = September
L = October
M = November
N = December

3rd digits F are the year. F is in 1976 or 1997

A = 1971 or 1992
B = 1972 or 1993
C = 1973 or 1994
D = 1974 or 1995
E = 1975 or 1996
F = 1976 or 1997
G = 1977 or 1998
H = 1978 or 1999
“I” was skipped
J = 1979 or 2000
K = 1980 or 2001
L = 1981 or 2002
M = 1982 or 2003
N = 1983 or 2004
(The month October, November, and December does not count with 2004)
“O” was skipped
P = 1984
“Q” was skipped
R = 1985
S = 1986
T = 1987
“U” was skipped
V = 1988
W = 1989
X = 1990
Y = 1991

4th digits M are the TYPES OF ITEM. M is Basic units

M = Mfg. Basic Unit
P = Purchased Basic Unit
S = Mfg. Low Side Item
T = Purchased Low Side Item
Y = Mfg. Accessory
Z = Purchased Accessory
O = Filler

The last 6 numbers

Is the SEQUENCED NUMBERS


Here how to read the New serial number: W 0 E 4 298223

York New Serial Number -- October, 2004 to the present day

Here how to read the new serial number: W 0 E 4 298223

1st digits W are Manufacturing Plant. This unit was made in Wichita

N = Norman
W = Wichita
A = Apodaca
S = Source One

2nd and 4th digits 0 and 4 (number) is the year of manufacture.

To find the year of manufacture you have to combine the 2nd digits with the 4th digits.

Ex. W 0 E 4 298223 was made in 2004. W 0 E 6 298223 was made in 2006. W 1 E 0 298223 was made in 2010.

More examples:

If the 2nd and 4th digits look like this:

2nd digits = 0 and the 4th digits is 5 = 2005

07 = 2007
11 = 2011

3rd digits E are the month. E is May

A = January
B = February
C = March
D = April
E = May
F = June
G = July
H = August
“I” was skipped
“J” was skipped
K = September
L = October
M = November
N = December


The last 6 numbers

Is the SEQUENTIAL NUMBERS

This is the place to ask question on York serial and model number. Click the links below to ask question.