In 2002 the first character of the serial number is 2, in 2003, 3 and so on. In 2002 they started their serial numbers with the year it was built. The first letter of the Trane serial number nomenclature gives the year of manufacture and the next two numbers are the week. This HVAC company started this in 1987 with the letter B and skipped a couple of letters during the years. Trane uses alpha codes in their serial numbers to determine the age of manufacture. But first, you have to know how to read the Trane serial number nomenclature. This is a string combination of letters and numbers that tells you when the unit was made. The simple way to identify the age of a Trane HVAC unit is to look at the serial number.
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February 2023
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