Liebert®

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

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

Parent Company:  Emerson Electric Co.

Example serial number styles/formats found:

  • Style 1:    0641N137175

  • Style 2:    349082-001 with Date Code:  J-97

Style 1:   0641N137175

Year of manufacture can be determined by using the 1st & 2nd numerical digits.
Week of manufacture can be determined by using the 3rd & 4th numerical digits.
Style 1 showing a date code.

Style 2:   349082-001 with Date Code:  J-97

Page last updated: 7/26/2017