hello everyone… I usually don’t do this but I told a customer today that I would investigate how old his A/C unit was. I can usually indentify and I’m guessing this one is 14-18yrs old. Carrier condenser Serial #N602217? That’s all I have. Any help would be greatly appreciated.
Chris
The date of manufacture is January 1986.
Hope this helps. 
Thank You Joe…
The following will explain a Carrier serial number sequence.
NNNNANNNNN This serial number format was used in the 1970’s through current. The first 4 numeric characters are the week and year of production. For example, a unit that came off the line on March 25, 1999 would begin with 1399, week 13 of the year 1999.
ANNNNNN This serial number was used from 1969 to 1990. The first alpha character is for the month of production.
A-M = Jan-Dec 1969-1979
N-Z = Jan-Dec 1980-1990
‘I’ and ‘O’ are not used
The second digit, a numeric character is the production year
The balance of the numeric characters are the production sequence
e.g., A912345…this serial number would be a unit produced in Jan 1969
P512345…this unit would have been produced in Feb 1985
Did ya mean to say 1990’s through current
I believe Carrier used a serial number format of “ANNNNNN” from 1969 to 1990, and then switched over to the current NNNNANNNNN serial number format.
Robert…I think you are correct, it should say 1990 thru current shouldn’t it? I cut and pasted that blurb from a thread on the old BB and didn’t proof it before posting, my bad. I’ll see if I can find that thread again and reference it here.
Thanks guys for all the info!!!
Chris