Carrier® HVAC Age Checker
Enter your Carrier serial number below to determine the manufacturing year of your HVAC system
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How to Find Your Serial Number
Your Carrier serial number can typically be found on:
- A metal nameplate attached to the outdoor condensing unit
- Inside the indoor air handler or furnace cabinet
- On the equipment documentation provided during installation
Carrier Serial Number Formats
Style 1 (1980-Present)
Example: 4006A17330 - Format: 4 digits, letter, 5 digits
Style 2 (1980's - Bryant/BDP)
Example: 850304091 - Format: 9 numeric digits
Style 3 (1980-1984)
Example: W4D14008 or 4WD14008 - Format: 8 characters with letters M-Z
Style 4 (1969-1979)
Example: A167890 - Letter A-L followed by 6 digits
Style 5 (Pre-1969)
Example: 6123456 - All numeric (7 or 5 digits)
Style 6 (1960-1979 - Bryant & Carrier)
Example: 46U152456 - 1-2 digits followed by letter