This home was built in 1986 and has 3 York HVAC units. The owner states they have replaced the condensers, they think around 1995. Here are the 3 serial numbers, thanks in advance.
York
MHYM238597
EFBM178930
ED9M134242
Information I have from a cheat sheet that I got from a York distributor shows the first serial number to be Aug 1991, the second is Jun 1993 and, from what I have, the third must not have been copied down right as the first four characters should be all letters (no numbers). After 2005, the plate will have numbers for the year.
Gary Loughman
Assured Home Inspections, PLLC
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
Thanks guys for your help.