HVAC age determination

Archive Public Archive
1

Originally Posted By: storkko
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I inspected a house last week which had a Carrier Air Conduction system. Model #40AQ0800-000 Serial#U2A60992. How do I determine when it was manufactured so I can put some kind of age on the inspection report?

2

Originally Posted By: Monte Lunde
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You have a computer, go to Carrier’s site, search there product line for your Model#. Check the manufacture’s specifications data sheet and in it will show you what the sequence of letters and numbers represents. if your Model# is not listed, then check out any other Model and look at the manufacture’s specification data sheet, they normal do not change there procedure in labeling Model and Serial numbers.

–
Monte Lunde CCI, CCPM, CRI


Viking Construction Services Inc.

3

Originally Posted By: Blaine Wiley
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Quote:
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


Hope this helps.
4

Originally Posted By: dvalley
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So it appears to be a “99”…ayyy?

–
David Valley


MAB Member


Massachusetts Certified Home Inspections
http://www.masscertified.com

"Some cause happiness wherever they go; others, whenever they go."
5

Originally Posted By: gporter
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Thanks for the link.

–
Gary Porter


GLP’s Home and Mold Inspections LLC


Orlando, Fl 32828


321-239-0621


www.homeandmoldinspections.com
6

Originally Posted By: ddivito
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August 1982 from the Technical Reference Guide (Carson Dunlop, pub)

7

Originally Posted By: kmcmahon
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Quote:
How do I verify when my Trane equipment was manufactured? The first letter of the serial number gives the year of manufacture as follows:

Z=2001
R=2000
P=1999
N=1998
M=97
L=96
K=95
J=94
H=93
G=92
F=91
E=90
D=89
C=88
B=87
S=86
Y=85
X=84
W=83
U=82(seventh digit)
T=81(seventh digit)
O, A=80(seventh digit)


--
Wisconsin Home Inspection, ABC Home Inspection LLC

Search the directory for a Wisconsin Home Inspector
8

Originally Posted By: storkko
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Kevin,


Thanks for the detailed reply. You are big help. Talk about confusing the customer/inspector with a date code!!!


I viewed your website and sample report and am very impressed with your professionalism. I too use "Report Host" as my reporting vehicle and am very happy with it.

Steve

9

Originally Posted By: rwashington
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Blaine, what source did you take your info from? I want to reference it in my report. Thanks.

–
Richard W Washington


www.rwhomeinspections.com

10

Originally Posted By: bkelly2
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Equipment Plate ]

11

Originally Posted By: tallen
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bkelly2 wrote:
How old is this one.

![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif) [ Image: Equipment Plate ]



Thats a typical AZ (been in the sun to long) --same age as the house unit.

--
I have put the past behind me,
where , however, it now sits, making rude remarks.

www.whiteglovehomeinspections.net

30 Oct 2003-- 29 Nov2005