Help with age of A/C

Unit is an ARI (manufactured by Unitary Products Group)
Model: TCGD48S41S1A
Serial: W0H8167694

My guess would be 2008 (3 years) but am not sure and was not able to verify online or in Prestons (mine only goes as far as 2005)

Thank for the help.

Here is what I have on UPG

YORK (Unitary Products since 1984)
Note: they skip the letters I, O, Q, U, Z.
Year of make indicated by 3rd letter in the serial number.
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
2004 - N
2005 - P
2006 - R
2007 - S

2008 I believe

2004 to present - carson dunlop reference guide

second and fourth character( first two digits) is the year
Serial: W0H8167694
2008

Second letter is(third character) is the month (a-L)
Serial: W0H8167694
August

Thanks guys, I know I can always rely on fellow members for help.

why do they even code it? why not just write the damn date???

To confuse you Robert, Hey BTW did you get a hat yet?