Originally Posted By: storkko This post was automatically imported from our archived forum.
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?
Originally Posted By: Monte Lunde This post was automatically imported from our archived forum.
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.
Originally Posted By: Blaine Wiley This post was automatically imported from our archived forum.
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