Sentinel Boiler


  • Fuel: Gas
  • System: Hot Water
  • Combustion: Natural Draft, atmospheric
  • Capacity: 5 sizes, 70 – 210 MBH Input
  • Efficiency: up to AFUE 82.3%

The Sentinel boiler is a hot water gas boiler with a heat exchanger which has for years been a “workhorse” of the heating industry. The Sentinel is available for use with propane or natural gas.  This boiler is popular with many heating contractors for performance and reliability.


All Sentinel boilers are DOE 2021 compliant.