• Mitsubishi Air Conditioner Serial Number Decoder

Never ask your air conditioner how old it is - we can tell you its age if you have a Rheem. Just drop in your AC's serial number, and you'll have its age instantly.

Mitsubishi Air Conditioner Serial Number Decoder

YORK (1971 to October 2004) Date of Manufacture (1971 – October 2004): The manufacturing date code is the second and third digits of the serial number, written as Month and Year of manufacture. (To determine month: A = Jan; B = Feb; C = Mar; D = Apr; E = May; F = Jun; G = Jul; H = Aug; I was not used; J was not used; K = Sep; L = Oct; M = Nov; and N = Dec.). To determine year of manufacture: • A = 1971 or 1992 • B = 1972 or 1993 • C = 1973 or 1994 • D = 1974 or 1995 • E = 1975 or 1996 • F = 1976 or 1997 • G = 1977 or 1998 • H = 1978 or 1999 • I was not used • J = 1979 or 2000 • K = 1980 or 2001 • L = 1981 or 2002 • M = 1982 or 2003 • N = 1983 or 2004 (except October, November, and December. See below.) • O was not used • P = 1984 • Q was not used • R = 1985 • S = 1986 • T = 1987 • U was not used • V = 1988 • W = 1999 • X = 1990 • Y = 1991 Sample Serial Numbers: The year is indicated in Red and the month in Blue. • E F BM210830 -This sample serial number indicates that the unit was manufactured in June of either 1972 or 1993. • E E HM611744 – This sample serial number indicates that the unit was manufactured in May of either 1978 or 1999.