WaterFurnace® HVAC age
How to determine the date of production/manufacture or age of WaterFurnace® 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: Operating as independent subsidiary of NIBE, a leading heat pump manufacturer for the European market
Subsidiaries or other related brands: None Known
Example serial number styles/formats found:
- Style 1: 180100228
- Style 2: UJ1087
- Style 3: D8367019
Legend: Year is RED; Month is GREEN; Week is BLUE
Style 1: 180100228
Note: This is believed to be the current styling as of at least 2012
Year of manufacture can be determined by using the 1st & 2nd positions of the serial number
Month of manufacture can be determined by using the 4th & 5th positions of the serial number

Style 2: UJ1087
Note: This style used from 1985 to 2012
Year of manufacture can be determined by using the 1st position of the serial number (see chart)
Month of manufacture can be determined by using the 2nd position of the serial number (see chart)


Style 3: D8367019
Note: This style used prior to 1985
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 1st position of the serial number (see chart)

WaterFurnace® History¹
- 1983 - Company founded in Ft. Wayne, IN as a McQuay distributor of geothermal products.
- 1985 - Purchases a water source heat pump product line from McQuay.
- 2014 - WaterFurnace is acquired by NIBE, a leading heat pump manufacturer for the European market. WaterFurnace continues to operate as an independent company, and now serves as the headquarters for NIBE's Energy business in North America.
¹Excerpts from https://www.waterfurnace.com/residential/why-waterfurnace/history-of-innovation