Furnace Age Chart
Use The Chart Below to Determine the Age of Your Furnace:
[groups_non_member group=”Members”]
[/groups_non_member]
[groups_member group=”Members”]
Amana: For tonnage refer to FLA & RLA. For age use the serial number and the “B-L-A-C-K-H-O-R-S-E” code wherein S=1969, E=70, B=71, L=72. (Of course, now that they’ve been bought by Goodman, who knows what’ll happen.)
B = 71, 81, 91, 01
L = 72, 82, 92, 02
A = 73, 83, 93, 03
C = 74, 84, 94, 04
K = 75, 85, 95, 05 H = 76, 86, 96, 06
O = 77, 87, 97, 07
R = 78, 88, 98, 08
S = 79, 89, 99, 09
E = 80, 90, 00, 10
————————————————————————–
Airquest: (International Comfort Products)
A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample: Serial Number: R883512345 Date of Mfg: 09/88
—————————————————————————
American Standard
First 3 digits are the year and week. Example: 649XXXXXX is December 2006
—————————————————————————-
Arco-aire: (Snyder General): A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample: Serial Number: R883512345 Date of Mfg: 09/88
(35th week of 1988 – September)
————————————————————————–
Bard: 1962 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. (The letter A in the Sample represents January).
A = January
B = February
C = March
D = April
E = May
F = June
G = July J = September
K = October
L = November
M = December
H = August
Letter “I” was not used.
Bard (continued)
8th digit is the year of Manufacture. (The letter D in the Sample represents 1964).
1962 = B
1963 = C
1964 = D
1965 = E
1966 = F
1967 = G
1968 = H
Letter “I” was not used.
1969 = J
1970 = K
1971 = L 1972 = M
1973 = N
1974 = O
1975 = P
Letter “Q” was not used.
1976 = R
1977 = S
1978 = T
1979 = U
1980 = V
Bard April & May 1980
Sample number 123 D A 123456
1st three digits are the Compressor Part Number.
4th digit is the month of Manufacture. In this sample D represents April.
D = April
F = May
5th digit is the year of Manufacture. In this sample A represents 1980.
1980 = A
This serial number style was only used during the months of April & May 1980.
6th thru 11th digits represent the Unit Identity Number.
Bard June 1980 to Current
Sample number 123 H80 1234567 02
1st three digits = Compressor Part # 4th digit = Month
A = January
B = February
C = March
D = April
“E” was not used
F = May
“G” was not used
H = June
“I” was not used
J = July
K = August
L = September
M = October
N = November
“O” was not used
P = December
Bard (continued)
5th & 6th digits = Year
80 = 1980
81 = 1981
82 = 1982
right on thru. The year 2000 started the numerical numbering from 00.
00 = 2000
01 = 2001
02 = 2002
right on thru to current date.
7th thru 13th digits = Unit Identity #
14th & 15th digits = Factory Code (01=OH; 02=GA)
——————————————————————————–
Broan (2005 and later) – See Nordyne (new)
———————————————————————————
Bryant: From 1964 to 1979 use the first two numbers of the serial number followed by a date code
1964 = R
1965 = S
1966 = T
1967 = U
1968 = V
1969 = W
1970 = X
1971 = Y 1972 = A
1973 = B
1974 = C
1975 = D
1976 = E
1977 = F
1978 = G
1979 = D
Example: 27Rxxxxxx = 27th week of 1964
After Bryant became Bryant, Day-Night, Payne the system changed. In the new systm the first and second digits of the serial number are the week and the last two are the year (Applies to all BDP).
Example: 2799xxxxxx = 27th week of 1999.
———————————————————————————
Buderus
Buderus serial numbers for boilers and tanks each consist of 18- 27 digits with clear, consistent patterns divided by dashes. The format for the serial number depends on the product manufacture date.
1. The first format of a Buderus serial number has four series of numbers separated by dashes and looks like this:
63036333-00-7080-3241
The first sequence of numbers is the product part number- this is an ST200 DHW Tank
The next series is the product version or series and consist of two digits- this was in the 00 series of boilers.
The third series of numbers is the Manufacture date- this tank was manufacutred on the 80th day of 2007, so the first digit signifies the year and the next three signify the day of the year – ex. 005, 065, 365
The last set is the manufacturing date Sequence (four or five digits)- code for the identifying the series of boilers made that day.
2. The second format of a Buderus serial number (may show an “)” in section A only). It is four series of numbers separated by dashes and looks like this:
253000-08065-00040-77470007254
The first sequence is the manufacturing location – the location code is 253000 for this boiler (there are many different locations)
The second sequence is the year and day of the year the product was manufactured – this boiler was manufactured on the 65th day of 2008.
The third series is the Sequence count- this product was the 40th produced on that day.
The final section is the product part number- this boiler is the G125BE/21.
Please Note: Each of the sections are crucial to make a unique serial number. If only part of the serial number is provided there is the probability that it will be a duplicate.
———————————————————————————
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 series of letters and single digits as explained below.
Through 1969, the first digit of the serial number indicates the year of manufacture. Example: 3xxxxxx = 1963, 4xxxxxx = 1964, etc.
1970 and later, a letter followed by a number indicates the month and year of manufacture. Example: A1 = January 1971, B1 = February 1971, C4 = March 1974 etc.
A = Jan
B = Feb
C = Mar D = Apr
E = May
F = Jun G = Jul
H = Aug
J = Sep K = Oct
L = Nov
M = Dec
———————————————————————————-
Chrysler Air Temp: Age is shown by the first digit of the serial number and corresponds to the last number of the year of manufacturer. Example 0C893745 = 1970. 1 = 1971, 2 = 1972, etc. Use common sense and visual observation to distinguish decades from one another.
———————————————————————————-
Climatrol: Unknown
————————————————————————–
Climate Master: Serial number indicates age from 1972 on
————————————————————————–
Coleman: Acquired by York in 1996. For 1996 and later, see York.
April 1992 – 1996: 1st two numbers are year, then month, then series.
Prior to April 1992: 1st two numbers are month, then year, then series.
————————————————————————–
Comfortmaker (International Comfort): A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Example: Serial Number: R883512345 Date of Mfg: 09/88
————————————————————————–
Day-Night: (Prior to BDP in 1979) Age coded into the serial number. First letter is the month followed by the second letter which is the year. A = 1970, B = 1971, Etc. Example: AAxxxxxx = January 1970, BExxxxxx = May 1971.
————————————————————————–
Ducane: uses two different formats on serial numbers. All of our serial numbers are ten characters. The most common format is all ten characters are numeric. In this format the last 4 numbers indicate the year and the week of the year. An example is your serial number 4140720320 where the 03 is 2003 and the 20 is the 20th week of the year (2002). The more recent format is ten character and the format is the first 4 characters are numeric, the fifth character is alpha, and the last 5 characters are numeric. The year code is determined from the 3rd and 4th characters that would be the last 2 digits of the calendar year (93=1993 and 06=2006). The fifth character which is alpha represents the month with A=January and M=December and but we do not use the letter I. This is an example of second serial number format, 4603M12345, the 03 is 2003 and the M is December.
————————————————————————–
ENTERPRISE FAWCETT
First letter(s) of the serial number indicates the product
WF- Wood Furnace
OF- Oil Furnaces
WH- Wood Heater
CH- Coal Heater
OR- Oil Range
W- Wood Range Savoy
C-Coal Range Savoy
The Second letter of the serial number indicates year of manufacture
A- 1975 2001
B- 1976 2002
C- 1977 2003
D- 1978 2004
E- 1979 2005
F- 1980 2006
G- 1981 2007
H- 1982 2008
I- 1983 2009
J- 1984 2010
K- 1985 2011
L- 1986 2012
M- 1987 2013
N- 1988 2014
O- 1989 2015
P- 1990 2016
Q- 1991 2017
R- 1992 2018
S- 1993 2019
T- 1994 2020
U- 1995 2021
V- 1996 2022
W- 1997 2023
X- 1998 2024
Y- 1999 2025
Z- 2000 2026
The last letter of the serial number indicates the month of manufacture
A- JANUARY
B- FEBRUARY
C- MARCH
D- APRIL
E- MAY
F- JUNE
G- JULY
H- AUGUST
I- SEPTEMBER
J- OCTOBER
K- NOVEMBER
L- DECEMBER
———————————————————————————-
Fedders: Through 1977, the last two letters of the serial number show the month/year of manufacture, beginning with September 1964. Example: xxxxAA = Sept 66, xxxxBC = Oct 68.(I is not used)
—————————————————————————
First Company Service Parts: 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.
—————————————————————————-
Frigidaire: See Tappan (New)
—————————————————————————-
General Electric: Age is the last 3 digits of the serial number. First digit being the year and the second and third digits being the month. Example xxxxx241 = 41st week of 1982, 92, 02 etc., xxxxx533 = 33rd week of 1985, 95, 05 etc..
—————————————————————————–
Gibson: See Tappan (New)
—————————————————————————–
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.
——————————————————————————-
Grandaire: See Tappan (New)
——————————————————————————-
Heil: A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample: Serial Number: R883512345 Date of Mfg: 09/88
———————————————————————————–
ICP (International Comfort Products) A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample
Serial Number: R883512345 Date of Mfg: 09/88
—————————————————————————-
Keeprite
A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample
Serial Number: R883512345 Date of Mfg: 09/88
—————————————————————————-
Kelvinator (Since 1999): See Nordyne or Tappan (New)
—————————————————————————-
Kenmore
A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Example: Serial Number: R883512345 Date of Mfg: 09/88
—————————————————————————–
Lennox: Before 1974 the first 2 digits indicated the year and the next digit the month. Example: 732xxx = February 1973.
Most of them actually have a separate sticker somewhere that has the year printed on it.
Newer ones (After 1973) 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.
———————————————————————————
Maytag: Since 2002 – See Nordyne Tappan (New)
———————————————————————————
Paloma Tankless: 1st four digits represent the month and year.
Example: 10.07 = October 2007
———————————————————————————
Peerless
Prior 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.
———————————————————————————-
Philco: See Tappan (New)
———————————————————————————-
Reznor: Most units’ serial number begins with three letters. These letters indicate the month and year of manufacture as shown in the table below.
Year Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
1970 VA VB VC VD VE VF VG VH VI VJ VK VL
1971 WA WB WC WD WE WF WG WH WI WJ WK WL
1972 XA XB XC XD XE XF XG XH XI XJ XK XL
1973 YA YB YC YD YE YF YG YH YI YJ YK YL
1974 ZA ZB ZC ZD ZE ZF ZG ZH ZI ZJ ZK ZL
1975 AAA AAB AAC AAD AAE AAF AAG AAH AAI AAJ AAK AAL
1976 ABA ABB ABC ABD ABE ABF ABG ABH ABI ABJ ABK ABL
1977 ACA ACB ACC ACD ACE ACF ACG ACH ACI ACJ ACK ACL
1978 ADA ADB ADC ADD ADE ADF ADG ADH ADI ADJ ADK ADL
1979 AEA AEB AEC AED AEE AEF AEG AEH AEI AEJ AEK AEL
1980 AFA AFB AFC AFD AFE AFF AFG AFH AFI AFJ AFK AFL
1981 AGA AGB AGC AGD AGE AGF AGG AGH AGI AGJ AGK AGL
1982 AHA AHB AHC AHD AHE AHF AHG AHH AHI AHJ AHK AHL
1983 AIA AIB AIC AID AIE AIF AIG AIH AII AIJ AIK AIL
1984 AJA AJB AJC AJD AJE AJF AJG AJH AJI AJJ AJK AJL
1985 AKA AKB AKC AKD AKE AKF AKG AKH AKI AKJ AKK AKL
1986 ALA ALB ALC ALD ALE ALF ALG ALH ALI ALJ ALK ALL
1987 AMA AMB AMC AMD AME AMF AMG AMH AMI AMJ AMK AML
1988 ANA ANB ANC AND ANE ANF ANG ANH ANI ANJ ANK ANL
1989 AOA AOB AOC AOD AOE AOE AOG AOH AOI AOJ AOK AOL
1990 APA APB APC APD APE APF APG APH API APJ APK APL
1991 AQA AQB AQC AQD AQE AQF AQG AQH AQI AQJ AQK AQL
1992 ARA ARB ARC ARD ARE ARF ARG ARH ARI ARJ ARK ARL
1993 ASA ASB ASC ASD ASE ASF ASG ASH ASI ASJ ASK ASL
1994 ATA ATB ATC ATD ATE ATF ATG ATH ATI ATJ ATK ATL
1995 AUA AUB AUC AUD AUE AUF AUG AUH AUI AUJ AUK AUL
1996 AVA AVB AVC AVD AVE AVF AVG AVH AVI AVJ AVK AVL
1997 AWA AWB AWC AWD AWE AWF AWG AWH AWI AWJ AWK AWL
1998 AXA AXB AXC AXD AXE AXF AXG AXH AXI AXJ AXK AXL
1999 AYA AYB AYC AYD AYE AYF AYG AYH AYI AYJ AYK AYL
2000 AZA AZB AZC AZD AZE AZF AZG AZH AZI AZJ AZK AZL
2001 BAA BAB BAC BAD BAE BAF BAG BAH BAI BAJ BAK BAL
2002 BBA BBB BBC BBD BBE BBF BBG BBH BBI BBJ BBK BBL
2003 BCA BCB BCC BCD BCE BCF BCG BCH BCI BCJ BCK BCL
2004 BDA BDB` BDC BDD BDE BDF BDG BDH BDI BDJ BDK BDL
2005 BEA BEB BEC BED BEE BEF BEG BEH BEI BEJ BEK BEL
2006 BFA BFB BFC BFD BFE BFF BFG BFH BFI BFJ BFK BFL
2007 BGA BGB BGC BGD BGE BGF BGG BGH BGI BGJ BGK BGL
2008 BHA BHB BHC BHD BHE BHF BHG BHH BHI BHJ BHK BHL
2009 BIA BIB BIC BID BIE BIF BIG BIH BII BIJ BIK BIL
2010 BJA BJB BJC BJD BJE BJF BJG BJH BJI BJJ BJK BJL
———————————————————————————-
Rheem/Ruud: Before 1974 the first 2 digits indicated the year and the next digit the month. Example: 732xxx = February 1973.
Since then, the age is coded into the last four digits of the serial number by week and year. Therefore xxxx2302 = 23rd week of 2002.
———————————————————————————–
Rinnai: The manufacturing date code is the first four digits of the serial number, written as YYMM, and is located at the bottom of the rating plate.
———————————————————————————
Tappan (Old): Age is the last 3 characters (digits and letter) of the serial number for the year and month of manufacturer.
Example: xxxxx85C = March 1985. (I not used)
Tappan (New): Since 1988 – The first 3 places are the model and series. The next 4 are the year and month and the next five are the production code
Example XXX0110XXXXX = October 2001
———————————————————————————
Tempstar (Two versions heard)
1. A letter followed by a 9-digit number. The second and third letter represent the year, the fourth and fifth numbers represent the week. There may be a date stamp to the right of the serial number.
Sample
Serial Number: R883512345 Date of Mfg: 09/88
2. Letter month (except I) followed by a two-digit year
————————————————————————–
Trane: Keeps switching the code. Beginning in 1971, age is a number followed by a letter in the serial number. Example: 1C-xxxx = March 1971, etc..
1980, 1981, 1982 the year is a letter in the 7th place. O = 80, T = 81, U = 82
Beginning 1983 a letter was used in the first position to designate the year followed by the week. W = 83, X = 84, Y = 85, S = 86, B = 87, C = 88, D = 89, E = 90, F = 91, G = 92, H = 93, J = 94, K = 95, L = 96, M = 97, N = 98, P = 99, R = 00, Z = 01. Example: B50632891 = Dec 87
(Beginning around 1987 the date of manufacturer is stamped on the ID plate most of the time.)
Beginning in 2002 the first digit of the serial number is the year followed by the week.
Example: 7165RHAIG equals the 16th week of 2007.
(Date of manufacture is on the data plate most of the time, but not always)
Current: First two digits are the year followed by the week.
Example 10023TTE1G denotes January 2010. The month and year of manufacture is also printed on the label.
——————————————————————————-
Westinghouse: Since 2002 – See Tappan (New)
——————————————————————————-
Whirlpool: Begins in 1970. The letter indicates the decade followed by the week. G = 1970’s, H=1980’s, J=1990’s, K=2000’s Example: H416XXXXX = 16th week of 1984
——————————————————————————-
Williams Comfort Products: Always check the Williams obsolescence chart first (Downloadable from the TIJ library) to see whether parts are even available.
Since 2000 – The first four digits of the serial number are the week followed by the year.
Example 3501XXXX is the 35th week of 2001 or September 2001
For any Williams product with a serial number beginning with a letter that is not on the obsolescence chart, call the manufacturer at 888-444-1212 and ask to speak to Rosemary.
——————————————————————————–
YORK (Purchased by Johnson Controls in 2004. Was Unitary Products from 1984 to 2004)
Note: they skip the letters I, O, Q, U, Z.
Year of make indicated by 3rd letter in the serial number.
Date is often displayed in the lower right corner of the label.
Fraser, Johnston and Luxaire were purchased by York in 1980.
1971 – A
1972 – B
1973 – C
1974 – D
1975 – E
1976 – F
1977 – G
1978 – H
1979 – J
1980 – K
1981 – L
1982 – M
1983 – N
1984 – P
1985 – R
1986 – S
1987 – T
1988 – V
1989 – W
1990 – X
1991 – Y
1992 – A
1993 – B
1994 – C
1995 – D
1996 – E
1997 – F
1998 – G
1999 – H
2000 – J
2001 – K
2002 – L
2003 – M
The UPG serial number nomenclature changed in 2004. The new sequence is shown below.
———————————————————————————
Weil-McLain
Please look on the outside jacket of the boiler for a CP Serial Number. It will have a bar code on it. Call (or email) Wiel McLain and they will tell you the date of manufacture. Phone: 219-879-6561 ask for Technical Services
Updated: November 18, 2008
Last updated by TIJ on November 5, 2010
[/groups_member]