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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

NCB

NCB-E Combi-Boilers

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Model Family: NCB
Annual Fuel Utilization Efficiency: 95.0% AFUE
Energy Star Rated: Energy Star Rated
Heat Exchanger Warranty: 10 Year Warranty
Warranty: 5 Year Warranty
Manufacturer's Stated Benefits:
  • 1 Year Labor Warranty
  • Compact space saving design
  • Three stainless steel heat exchangers, two for heating and one specifically for hot water
  • Total control -- freeze protection, all system set up, operations and troubleshooting available at your fingertip
  • Natural or LP gas compatibility
NHB

NHB Series Tankless Condensing Gas Boiler

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Model Family: NHB
Annual Fuel Utilization Efficiency: 95% AFUE
Energy Star Rated: Energy Star Rated
Heat Exchanger Warranty: 15 Year Warranty
Warranty: 5 Year Warranty
Manufacturer's Stated Benefits:
  • Adjustable Delta T Ranges
  • Intregrated system setup, operations and troubleshooting
  • Anti-Freeze feature
  • Easy conversion from natural gas to propane
  • Dual stainless steel heat exchangers
  • Super condensing efficiency
  • Venting Type:Forced Draft Direct Vent
  • Total control -- freeze protection, all system set up, operations and troubleshooting available at your fingertips
Series 3

Series 3

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Model Family: Series 3
Annual Fuel Utilization Efficiency: 84% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: Limited Lifetime Manufacturers Warranty
Warranty: Limited Lifetime Manufacturers Warranty
Manufacturer's Stated Benefits:
  • Natural or LP gas
  • Optional LCD touch screen for system monitoring
  • Time proven cast iron design for durability and reliability
  • Optimum venting flexibility for homes with existing chimneys
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.
CG-E

CG-E Series Efficient Gas-Fired Water Boiler

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Model Family: CG-E
Annual Fuel Utilization Efficiency: 84% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: Lifetime limited warranty
Warranty: Lifetime limited warranty
Manufacturer's Stated Benefits:
  • Chimney vented
  • Integrated boiler control
  • Energy-saving "thermal purge" feature circulates residual warm water in heating system prior to firing boiler
  • Combo high limit circulator relay
  • Natural or LP gas
  • Cast iron heat exchanger
  • Metal section connectors
  • Step-opening gas valve