Anyone ever hear of a Moncrief furnace. A client has one, oil, forced hot air, that looks like it came over on the Mayflower or was left by aliens. I’d still like to find the manufacturer and give him an approximate age on the beast. I advised him, and he knows, this unit probably has a limited life expectancy. As always, thanks for your help.
Moncrief was bought by Luxaire many years ago and used the same date code as older Luxaire models.
The last two numbers of the serial number are the year of manufacture before 1980.
That’s when York took over Luxaire and changed the date code.
YORK**:(Unitary Products since 1984)
Fraser, Johnstonand Luxaire** were purchased by York in 1980.
(Borg-Warner) (Unitary)
Third letter in Serial Number (If two numbers – use either and look for ANSI date)
Fourth number - specifies fourth digit of year of manufacture.
When there are three or four letters at the start, the third letter is the year. Y is 1991, A is 1992, etc.
Web site with more info. On York http://www.brewsterhomeinspections.com/reports/york.pdf](http://www.brewsterhomeinspections.com/reports/york.pdf)
**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 2004 – N 2005 – P **
2006 – R 2007 – S 2008-T
Since 2005 models have a letter-number-letter-number configuration. (SN: W0E5195159)
W=city of manufacture******0=third digit of year******E=month******5=fourth digit of year
(Wichita) 200-? May 2005
Yorkrecently changed their serial nomenclature for units manufactured after 2005.
NEW serial decoding: First (letter) - specifies CITY of manufacture. W - Witchita, Kansas
Second (number) - tells you the THIRD digit of the year of manufacture.
(Third letter) - specifies month of manufacture. (12 Letters) A-Jan B-Feb C-Mar thru L-Dec
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Have fun…
Thank you, Jae.