National Comfort Products® HVAC age
How to determine the date of production/manufacture or age of National Comfort Products® brand HVAC Systems.
The industry average service design life for most forced air furnaces is 15-20 years, and the industry average service design life for most air conditioning condensing units is 10-15 years. The average service design life of boilers can vary from as little as 10 years to as many as 50 years depending on the type and quality of materials used in their manufacture. Routine upkeep/maintenance, regional weather/climate, and location/placement of the mechanical systems will all play critical roles in the longevity of these systems.
See also: Estimated Useful Service Life Expectancies
Parent Company: National Refrigeration and Air Conditioning Products, Inc.
Subsidiaries or other related brands:
Example serial number styles/formats found:
- Style 1: 24730347 -or- 352A6478 (style used since 2003)
- Style 2: 23221112 -or- 236C7591 (style used from 9/30/1998 through 2002)
- Style 3: B98B1112 (style used prior to 9/30/1998)
Legend: Year is RED; Month is GREEN; Week is BLUE
Style 1: 24730347 -or- 352A6478 (style used since 2003)
Year of manufacture can be determined by using the 2nd & 3rd positions of the serial number (see chart)
Month of manufacture can be determined by using the 4th position of the serial number (see chart)


Style 2: 23221112 -or- 236C7591 (style used from 9/30/1998 to 2002)
Year of manufacture can be determined by using the 2nd & 3rd positions of the serial number (see chart)
Month of manufacture can be determined by using the 4th position of the serial number (see chart)

Style 3: B98B1112 (style used prior to 9/30/1998)
Year of manufacture can be determined by using the 2nd & 3rd positions of the serial number
Month of manufacture can be determined by using the 4th position of the serial number (see chart)

National Comfort Products® History¹
- Comming soon