Beginning in 1970 Carrier began to use a letter followed by a single digit year. Click through until finding the correct Carrier product. The date of production/manufacture or age of Carrier® HVAC equipment can be determined from the serial number located on the data plate. Post photos, respond to polls and access other special features … carrier model AND SERIAL NUMBER, HOW TO TELL DATE AND SIZE … Geothermal / Water source heat pumps; specialty Systems; Boilers – Hydronic, Steam …. For units from the late 1960s thru the late 1980s, there is a different serial number code, with the single number after … Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). 1. carrier home comfort product finder. Carrier Model Numbers Chart . Participate in over 40 different forums and search/browse from nearly 3 million posts. Carrier_model_numbers.png. model number nomenclature HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Example: 3xxxxx = 1963, 4xxxxx = 1964, 5xxxxx = 1965, etc. The second two digits of the serial number are the year of manufacture of a Carrier heat pump or air conditioner. Click the PDF file below to view information on the Carrier Model Numbers Chart. This has a box with the item name, description and the serial number. Carrier® How to determine the date of production/manufacture or age of Carrier® HVAC Systems. Age: Through the 1960s Carrier used the first digit of the serial number to indicate the year of manufacture. This unit was manufactured in 2002. Click on it to go to the PDF page. Next to the product, under Key Documents, is a link called Product Data. Once on the PDF page, look at the top-right side of the page. Example: A1 = January 1971, B2 = February 1972, M5 = December 1975 Note: No letter I A=Jan Prev: Aquasnap Model Number Nomenclature / Chiller Model Number Chart; Topics. It would be so much easier to use the HVAC Decoder App that has Carrier Model Number … Reading Air Conditioner's Model Nomenclature 12