Coleman serial age
Manufacture date from the rating-plate serial. Same family as York, Luxaire. A printed MFR date on the plate still wins.
Coleman
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
York-family serial. Rating plate on the cabinet; manufactured-home units often hide it on the vestibule wall.
Styles
After 2004
W0K5896070
Same as current York: year in the 2nd+4th digits, month letter in the 3rd.
Same date-code family: York.
Cross-checked against Coleman HVAC age. FieldBench does not host or republish that page. Letter charts we could not verify are linked out instead of invented.