Thermo Pride® HVAC age

How to determine the date of production/manufacture or age of Thermo Pride® 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: Burnham Corporation

Subsidiaries or other related brands: Burnham | Thermo Products

Thermo Pride does not encode the date of manufacture within their serial number.

Unless the manufacture date is specifically stated on the data plate, the date of production/manufacture or age of Thermo Pride brand HVAC equipment cannot be determined from the serial number alone.

Example serial number styles/formats found:

  • Style 1:    981858

See below for further information.

Style 1:   981858

Per information from Thermo Pride, the manufacture date is NOT encoded within the serial number alone.

Unless the data plate specifically states it, the manufacture date cannot be determined without assistance from the manufacturer. Both model and serial numbers must be included when contacting the manufacturer for assistance with manufacture date lookup.

"Our serial numbers do not include date codes. We would have to look it up from the serial number and model number which are located inside the unit on the data plate. Once you have the model and serial number, you can fill out the contact form located under the Contact Us tab and in the comment section indicate that you would like to know the date of installation providing the model and serial number as well. You will then get a reply back via the email address you provided on the contact form."

Otherwise, you may be able to estimate the date of manufacture using other clues or date codes from the gas valve, ANSI or CSI or CGA standard revision date, and other helpful clues. For additional tips, please see our Hints and Tips page.

The sample data plate below is an example of a Thermo Pride data plate that includes the specific manufacture date. Additionally, further down the data plate (under "Performance") is the ANSI Z.21.47 - CAN/CGA 2.3-2006 compliance standard. The year "2006" is the ANSI/CGA Standard revision year the unit conforms to. If the unit did not indicate the year of manufacture as 2011 specifically, one would be able to determine that the system could not be any older than 2006 from the year of the Standards revision under Performance Data on the rating plate. These standards are revised approximately every 4-6 years, and so can provide an estimated age range of the system.

Note: If you have an older system believed to have been manufactured prior to 2005, we have resources that may be able to assist with estimated manufacture year by the model number. You can submit an assistance request at

Thermo Pride® History¹
  • 1946 - Thermo Products is founded.
  • 1997  - Thermo Products and related brands are purchased by Burnham Holdings.

¹Excerpts from various industry sources

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: 11/03/2023