HVAC Index

Click Here to go to the index

Water Heater Index

Click Here to go to the index

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:

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

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 2^nd & 3^rd positions of the serial number (see chart)

Month of manufacture can be determined by using the 4^th 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 2^nd & 3^rd positions of the serial number (see chart)

Month of manufacture can be determined by using the 4^th 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 2^nd & 3^rd positions of the serial number

Month of manufacture can be determined by using the 4^th position of the serial number (see chart)

National Comfort Products® History¹

Comming soon

Every effort is undertaken to offer you correct and concise information to assist you in determining the age or manufacture date of HVAC/R equipment. Users relying on this information do so at their own risk.

Page last updated: 08/31/2023

Any of the trademarks, service marks, collective marks, design rights or similar rights that are mentioned, used or cited in the articles of the Building Intelligence Center (www.building-center.org) are the property of their respective owners. Their use here does not imply that you may use them for any purpose other than for the same or a similar informational use as contemplated by the original authors of these articles under the CC-BY-SA and GFDL licensing schemes. Unless otherwise stated Building Intelligence Center (www.building-center.org) sites are neither endorsed by nor affiliated with any of the holders of any such rights and as such Building Intelligence Center (www.building-center.org) cannot grant any rights to use any otherwise protected materials. Your use of any such or similar incorporeal property is at your own risk. This guide is intended to assist Commercial/Residential Building Inspectors, HVAC professionals, Facilities Managers, HOA’s, etc.., in determining the date of manufacture and/or age of HVAC equipment to determine the expected useful life (EUL). This web site should not be relied upon for commercial use or interpretations. Accuracy and reliability of the information provided is believed accurate but is not guaranteed. The burden for fitness of information provided relies solely and completely with the user. In no event will Building Intelligence Center or its representatives be liable for any loss or damages whatsoever for consequential, incidental, indirect, special, or tort damages of any kind, including but not limited to loss of data, lost profits, business interruption, loss of business information, or other pecuniary loss that might arise from the use of or reliance on the information provided within.