HYFRA®

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

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

Parent Company:  Lennox

Example serial number styles/formats found:

  • Style 1:    0410118

Style 1:   0410118

Year of manufacture can be determined by using the 1st & 2nd numerical digits.

Page last updated: 7/26/2017