Boilers

If your home has hot water radiators in each room for heat, you have a boiler to heat the water. Like a furnace, the energy efficiency of a boiler is given as the Annual Fuel Utilization Efficiency (AFUE). Boilers manufactured since 1992 must have an AFUE of at least 80%. We offer a complete line of gas and oil boilers starting at 80% AFUE and up.

Gas Boiler Product Offering

Feature Comparison
Gas Boiler Product Offering
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Gas Boiler Product Offering
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Gas Boiler Product Offering
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Gas Boiler Product Offering
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Product NamePreferred™ Series Modulating Gas BoilerPreferred™ 90 Boiler Preferred™ 84 Boiler Legacy™ 80 Boiler BS2
Model FamilyBWMBW9BW3BS2
Annual Fuel Utilization EfficiencyUp to 95% AFUE90% AFUEUp to 84.4% AFUEUp to 82.7% AFUE
Energy Star RatedENERGY STAR® ENERGY STAR®NoNo
Heat Exchanger Warranty15-year heat exchanger limited parts warranty15-year parts limited warranty on heat exchanger section20-year parts limited warranty on heat exchanger section12-year parts limited warranty on heat exchanger
Warranty10-year limited parts warranty with timely registration5-year parts limited warranty5-year parts limited warranty 5-year parts limited warranty
Manufacturer's Stated Benefits
  • Modulating
  • Gas-fired
  • Integrated boiler control
  • Stainless steel heat exchanger
  • Built in primary/secondary piping
  • Integrated boiler control
  • Cast-iron heat exchanger
  • Pressure-relief valve
  • Integrated boiler control
  • Cast-iron heat exchanger
  • Pressure-relief valve
  • Gas-fired models
  • Stainless steel/titanium alloy composite burners
  • Fiberglass insulated casing
  • Small, compact design
  • Integrated boiler control
  • Cast-iron heat exchanger
  • Pressure-relief valve
  • Gas-fired models
  • Water or steam models
  • Standard standing pilot or optional electronic ignition
  • Electric vent damper
  • Stainless steel/titanium alloy composite burners
  • Compact design