Aug 21, 2014  CARRIER MODEL AND SERIAL NUMBER, HOW TO TELL DATE AND SIZE Have a few carrier units need to know age and tonnage, M# 48TFD005-511-S# M# 48TFE008-511-S# M# 48TJF016-58IYA S#2602F63529 Appreciate any help or any links to a carrier site that i can use in the future to identify units.

Hopefully this works.Answer:.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 1969-1979N-Z = Jan-Dec 1980-1990‘I’ and ‘O’ are not usedThe second digit, a numeric character is the production yearThe balance of the numeric characters are the production sequencee.g., A912345this serial number would be a unit produced in Jan 1969P512345this unit would have been produced in Feb 1985. Rcarter:Hopefully this works.Answer:.The following will explain a Carrier serial number sequence.NNNNANNNNN This serial number format was used in the 1970’s through current.

Welltech 40085 htfb85 manual transmission problems. 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 1969-1979N-Z = Jan-Dec 1980-1990‘I’ and ‘O’ are not usedThe second digit, a numeric character is the production yearThe balance of the numeric characters are the production sequencee.g., A912345this serial number would be a unit produced in Jan 1969P512345this unit would have been produced in Feb 1985Thanks Ron This is just what I was looking for. According to the aging convention you provided the systems in question are:Furnace built in February 1981 and A/C unit built in October, 1980Thanks for the help!Jeff.