Trane serial age
Manufacture date from the rating-plate serial. Same family as American Standard, Ameristar. A printed MFR date on the plate still wins.
Trane
Type the serial off the rating plate. Spaces and hyphens are ignored. Manufacture date is not the install date.
Diagnose this call
Age is open. The walkthrough is the seat.
Where the plate is
Furnace: blower-door plate. Outdoor: side panel. 2010+ serials start with four digits (year, week).
Styles
2010–present
130313596L
First two digits year, next two week. 1303… = week 3 of 2013.
2002–2009
91531S41F
First digit is the year (2=2002 … 9=2009). Positions 2–3 are the week. 915… = week 15 of 2009.
1983–2001
F23456789
First letter is the year (F=1991, C=1988, S=1986, Z=2001). Next two digits are the week. Letters A, I, O, Q are not used.
Same date-code family: American Standard.
Cross-checked against Trane HVAC age. FieldBench does not host or republish that page. Letter charts we could not verify are linked out instead of invented.