Armstrong® HVAC Age

How to determine the date of production/manufacture or age of Armstrong® HVAC Systems.

The date of production/manufacture or age of Armstrong® HVAC equipment can be determined from the serial number located on the data plate.

Parent Company: Armstrong Air Conditioning, Inc., which is part of the Allied Air Division of Lennox.
Sister or similar Brands Include:   AirEase | AirEase-Johnson | Aire-Flo | Allied Commercial | Armstrong | Armstrong Air | Concord | Ducane | Lennox | Magic-PAK

Example serial number styles/formats found:

  • Style 1:    4607B20058

  • Style 2:    A25175KKA

Ledger:  Year is RED  – Month is GREEN – Week is BLUE

Style 1:  4607B20058

 


Style 2:  A25175KKA


Page last updated: 9/3/2017