Whirlpool furnace Aug 1971? is this right?

ser #h71936472

Whirlpool furnace Aug 1971? is this right?

ser #h71936472

I don’t think so. I believe the H is 198x, with the 7 being the last digit, so 1987.

Thanks RR,

Do you a guide book that you look it up in? If so what is the name of it and where can I get one?

The date code is the 3rd to last on your model number.

Example model numbers: LRS6233**B**W1= 1994 , SF367PE**Y**W1= 1992 , LE6685X**P**W1= 1985 or 2004 , ET22PKX**X**W0= 1991 , EV150CX**K**W0 = 1982 or 2001

**Letter : ****Year **

K:1982 or 2001

L:1983 or 2002

M:1984 or 2003

P:1985 or 2005

S:1987 or 2006

T:1988 or 2007

V:1989 or 2008

W:1990 or 2009

X:1991 or 2010

Y:1992 or 2011

A:1993 or 2012

B1994 or 2013

D1995 or 2014

E1996 or 2015

F1997 or 2016

G1998 or 2017

H1999 or 2018

J2000 or 2019

I sometimes go * here*](http://www.appliancefactoryparts.com/applianceshvac/help-center/appliance-age/whirlpool-age.html) when all else fails.

Some use a * prestons*](http://www.prestonguide.com/)guide (often with mixed results it seems.)

Here is a quick cheat sheet for you that you might not have:

HVAC AGE CODES IN SERIAL # INFO

Rheem & Rudd: in the middle of the serial number will be a letter “F” the following four numbers are the week and year.

Carrier, Bryant, Payne, Day & Night: Recently (last 20 years or so) the first four numbers in the serial number represent the week and year. Previously, it was a complex series of letters and single digits. Call 905 672-0860 if you get stuck.

Lennox: Either the first two or second two digits are the year, it varies by era, but most of them actually have a separate sticker somewhere that has the year printed on it. Newer ones are first two equals manufacturing plant #, 2nd two are year and letter in fifth slot is month (A thru M minus I). So 5898G 07568 would be Plant # 58, Year of MFR would be 98 and month would be July.

Amana: BLACKHORSE. B=1971 or 1981. (Of course, now that they’ve been bought by Goodman, who knows what’ll happen.)

Goodman: First two digits of the serial number are the year. Second two are the month.

Btu rating is model number…ie; GMP075-3 (75,000 bonnet input)

Compressor is same :serial # 9709088872 (yr1997 wk 09) Tonnage is model # CK361C The first two numbers after the CK (letters) divided by 12 is tons. ie: 36 div by 12= 3 tons.

YORK HVAC DATING (Unitary Products since 1984)

Note: they skip the letters I, O, Q, U, Z.

Year of make indicated by 3rd letter in the serial number.

1971 - A 1992 - A

1972 - B 1993 - B

1973 - C 1994 - C

1974 - D 1995 - D

1975 - E 1996 - E

1976 - F 1997 - F

1977 - G 1998 - G

1978 - H 1999 - H

1979 - J 2000 - J

1980 - K 2001 - K

1981 - L 2002 - L

1982 – M 2003-M

1983 – N 2004-N

1984 – P 2005- P

1985 - R

1986 - S

1987 - T

1988 - V

1989 - W

1990 - X

1991 – Y

I’ve only found that to be true with the third to last “digit” is a letter. In this case, it is not.

I use a combination of Carson Dunlop’s Technical Reference Guide, Preston’s Guide, and ongoing research of my own.

Model number is my reference point here, not his serial number.

I see what you did.

He didn’t have a model number so I totally ignored the word “model” in your post.

Sorry about that.

Might help if I read, right?

Could you give me a red box, please? Thanks.

No red boxes for you my friend…

That is unless its tall and has a bottle of Repasado 100% Agave in it!