National Comfort Products®

How to determine the date of production/manufacture or age of National Comfort Products® HVAC Systems.

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

Parent Company:  National Refrigeration and Air Conditioning Products, Inc.

Example serial number styles/formats found:

  • Style 1:       24730347 (Used since 2002)
  • Style 2:       23221112 (From 9/30/1988 t0 2002)
  • Style 3:       B98B1112 (Prior to 9/30/1998)

Style 1:  24730347

Year of manufacture is coded in the 2nd & 3rd numerical digits.  In this example the number 47 represents the year 2003.  (See chart below).
Month of manufacture is coded in the 4th numerical digit.  In this example the #3 represents the month of March. (See chart below).


Style 2:   23221112

Year of manufacture is coded in the 2nd & 3rd numerical digits. In this example the number 32 represents the year 1998. (See chart below).
Month of manufacture is coded in the 4th numerical digit. In this example the #2 represents the month of February. (See chart below).

Style 3:  B98B1112

Year of manufacture is 1st &2nd numerical digits

Month of manufacture is 3rd character letter digit (See chart below)

Page last updated: 13 Sep 2015