Ducane® HVAC age

How to determine the date of production/manufacture or age of Ducane® 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.

Parent Company: Lennox

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

Example serial number styles/formats found:

Style 1: 4140720328
Style 2: 4601J19567

Legend: Year is RED; Month is GREEN; Week is BLUE

Style 1: 4140720328

Year of manufacture can be determined by using the 4^th & 3^rd from last positions of the serial number

Week of manufacture can be determined by using the last 2 positions of the serial number

Style 2: 4601J19567

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

Month of manufacture can be determined by using the 5^th position (letter) of the serial number

Ducane® History¹

¹Coming 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: 12/03/2023

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