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How old is my boiler?
30 boiler brands catalogued, 19 with a sourced serial format you can decode here. Pick your brand; the serial format depends on it.
- 19 of 30 boiler brands on this site have a sourced serial number date format.
- The InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Boiler at 40 years of expected service.
Brands with a decoder
Bosch (HVAC)before 20091 formatBradford White1984 to present1 formatBuderusera not stated; era not stated2 formatsBurnham / U.S. Boilerera not stated1 formatCrownera not stated; 2004 to present2 formatsDunkirk2005 to present; 2003 to present; 1979 to 20013 formatsEnergy Kineticsera not stated; era not stated2 formatsHTP1994 to 2011; 2011 to 2021; 2021 to present3 formatsIBCera not stated1 formatLaarsera not stated; before 19992 formatsNavienera not stated1 formatNew Yorkerera not stated1 formatPeerless2000 to present; 1984 to 1999; before 19833 formatsRinnaiera not stated1 formatSlant/Finera not stated1 formatTriangle Tubeera not stated1 formatUtica2005 to present; 2003 to present; 1979 to 20013 formatsViessmannera not stated1 formatWeil-McLain1988 to present1 format
Brands catalogued, format not yet sourced
- Bosch Boilers
- Bryant/Carrier Boilers
- Burnham
- Columbia Boiler
- Crown Boiler
- Laars Boilers
- Lennox Boilers (legacy)
- Lochinvar Boilers
- Navien Boilers
- Rinnai Boilers
- Smith Cast Iron Boilers
Where the data plate is on a boiler
On the jacket: a plate or sticker on the front or side of the boiler casing, sometimes behind a removable front panel next to the gas valve or control.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Boiler at 40 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.