Borg-Warner®
How to determine the date of production/manufacture or age of Borg-Warner® HVAC Systems.
The date of production/manufacture or age of Borg-Warner® HVAC equipment can be determined from the serial number located on the data plate.
Parent Company: York
Sister or similar Brands Include: Borg-Warner® | Coleman® | Evcon® | Fraser-Johnson® | Guardian® | Luxaire® | Moncrief® | Red T® | York®
Example serial number styles/formats found:
- Style 1: 0A5123456
- Style 2: EFBM4210830
- Style 3: HM409295
Style 1: 0A5123456
Description: Nine (9) character Serial number. Begins with one (1) numerical digit followed by one (1) letter digit and ends with seven (7) numerical digits.
Year of manufacture is 1st-3rd character numerical digits.
Month of manufacture is 2nd character letter digit

Style 2: EFBM4210830
Description: Eleven (11) character Serial number. Begins with four (4) letters and ends with seven (7) numerical digits.
Month of manufacture is 2nd letter digit. (See chart below)
Month of manufacture is 3rd letter digit. (See chart below)

Style 3: HM409295
Description: Eight (8) character serial number begins with two (2) letters followed by six (6) numerical digits.
Month of manufacture is 1st digit of the serial number. (See chart below).
Year of manufacture 2nd digit of the serial number. (See chart below).

Page last updated: 13 April 2016