AIR-CONDITIONER DATE CODES (serial #)
AMANA / BLACKHORSEB=1971 or 1981 (Of course, now that they've been bought by Goodman, who knows what'll happen)
BARD1962 to March 1980 Sample Number 123456 A D
1st six digits are the Unit Identity Number. In this example they are represented by the numbers 123456. 7th digit is the month of Manufacture.
8th digit is the year of Manufacture. (The letter D in the Sample represents 1964).
1962 = B 1965 = E 1968 = H 1970 = K 1973 = N Letter 'Q' not used 1978 = T
1963 = C 1966 = F Letter 'I' not used 1971 = L 1974 = O 1976 = R 1979 = U
1964 = D 1967 = G 1969 = J 1972 = M 1975 = P 1977 = S 1980 = V
April & May 1980 Sample number 123 D A 123456
1st three digits are the Compressor Part Number. 4th digit is the month of Manufacture. 5th digit is the year of Manufacture.
In this sample A represents 1980. 1980 = A 6th thru 11th digits represent the Unit Identity Number.
This serial number style was only used during the months of April & May 1980.
June 1980 to Current Sample number 123 H80 1234567 02 1st three digits = Compressor Part # 4th digit = Month
5th & 6th digits = Year 80 = 1980 81 = 1981 82 = 1982 The year 2000 started the numerical numbering from 00.
00 = 2000 01 = 2001 02 = 2002 Right on through to current date. 7th thru 13th digits = Unit Identity #. 14th & 15th digits = Factory Code (01=OH; 02=GA)
Carrier, Bryant, Payne, Day & NightRecently (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.
ColemanSerial numbers prior to April 1992=1st two numbers are month, then year, then series.
After April 1992, 1st two numbers are year, then month, then series. Call 905-672-0860 if you get stuck.
Comfortmaker (International Comfort)Uses the first letter for the month (skipping I) and the first two digits are the year.
First Company Service PartsIs one of 4 divisions of First Operations. They supply OEM equipment to all of the major HVAC manufacturers.
They are located in Dallas, Tx at 214-388-5751. Harold Hammer at Tech Support (ext#5) will answer your questions.
GoodmanFirst two digits of the serial number are the year. Second two are the month.
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.
PeerlessPrior to 1984 there was not a date code included as part of the serial number. Starting in 1984, there was a four digit date code following the serial number that was month and year. Example - JO-12345-1084, this unit was built in October of 1984. Starting in the year 2000, same idea only it was a six digit date code following the serial number that is year and month. Example - 1234567-200105, this would have been build in May of 2001.
Anything without the addition to the serial number would have been made before 1984 and would require contact with the factory.
Rheem & Rudd WeatherkingSomewhere in the middle of the serial number will be a letter. The following four numbers are the week and year.
TRANEUses alpha codes in their serial numbers to determine year of manufacture. They started this in 1987 with the letter B and skipped a couple of letters during the years.. The first letter of the serial number gives the year of manufacture as follows:
O, A=80(seventh digit) U=82(seventh digit) X=84 S=86 C=88 E=90 G=92 J=94 L=96 N=1998 R=2000
T=81(seventh digit) W=83 Y=85 B=87 D=89 F=91 H=93 K=95 M=97 P=1999 Z=2001
In 2002 they started their serial numbers with the year it was built. In 2002 the first character of the serial number is 2, in 2003, 3 and so on.
Weil-McLainPlease look on the outside jacket of the boiler for a CP Serial Number. It will have a bar code on it. Call (or email) Weil-McLain and they will tell you the date of manufacture. Phone: 219-879-6561 ask for Technical Services
YORK (Unitary Products since 1984)York purchased Fraser, Johnston and Luxaire in 1980.
Year of make indicated by 3rd letter in the serial number. Note: they skip the letters I, O, Q, U, Z.
1971 - A 1975 - E 1979 - J 1983 - N 1987 - T 1991 - Y 1995 - D 1999 - H 2003 - M
1972 - B 1976 - F 1980 - K 1984 - P 1988 - V 1992 - A 1996 - E 2000 - J 2004 - N
1973 - C 1977 - G 1981 - L 1985 - R 1989 - W 1993 - B 1997 - F 2001 - K 2005 - P
1974 - D 1978 - H 1982 - M 1986 - S 1990 - X 1994 - C 1998 - G 2002 - L 2006 - R

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Weatherking: 9th box from left is the year Sleek bill keygen crack.

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First Company Hvac

Carrier offers professional HVAC service, support, information, and resources. First, make sure you know the type of unit you have – the serial number will have.