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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

MAC 205

MAC High Efficiency Wall Mounted Modulating Condensing Boiler

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Model Family: MAC 205
Annual Fuel Utilization Efficiency: 95% AFUE
Energy Star Rated: ENERGY STAR® 2018 Most Efficient
Heat Exchanger Warranty: 10 year limited warranty shall apply to only the Original Purchaser
Warranty: 10 year limited warranty shall apply to only the Original Purchaser
Manufacturer's Stated Benefits:
  • Boiler with AI [Artificial Intelligence] Control Technology
  • Automatically sets up the boiler during initial startup
  • Recognizes Natural or LP Gas, no conversion kit required
  • Primary/Secondary LABOR SAVER™ Manifold Included
  • FREE 2-YEAR PARTS & LABOR
  • 7:1 Turndown Modulation Ratio in DHW Mode
  • 5.5:1 Turndown Modulation Ratio in Heating Mode
  • 316L Stainless Steel Heat Exchanger and Burner.
  • Assembled Boiler with Jacket, Induced Draft Fan, High limit sensors
  • 30psi Relief Valve, Low Water Pressure Switch, Temperature/Pressure Gauge
BWM

Performance™ Gas- Fired Boiler

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Model Family: BWM
Annual Fuel Utilization Efficiency: Up to 95% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 15-year heat exchanger limited warranty
Warranty: 10-year limited parts warranty with timely registration
Manufacturer's Stated Benefits:
  • Gas valve with 5:1 turn-down ratio
  • Built-In boiler circulator pump
  • Built-In Primary/Secondary Piping
  • Built-In Low Water Cut Off
  • Outdoor Temperature sensor Included
  • Gas-fired, hot-water output
  • Stainless Steel heat exchanger
  • Intermittent direct spark to pilot ignition
  • Integrated multiple boiler
  • Control capability for up to 16 boilers
  • Electronic spark to pilot ignition
  • Direct Vent and Sidewall venting
  • Condensate drain with built in trap
  • Pre-mix venturi burner
  • Propane convertible
MAH 165

MAH High Efficiency Wall Mounted Modulating Condensing Boiler

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Model Family: MAH 165
Annual Fuel Utilization Efficiency: 95% AFUE
Energy Star Rated: ENERGY STAR® 2018 Most Efficient
Heat Exchanger Warranty: 10 year limited warranty shall apply to only the Original Purchaser
Warranty: 10 year limited warranty shall apply to only the Original Purchaser
Manufacturer's Stated Benefits:
  • Boiler with AI [Artificial Intelligence] Control Technology
  • Automatically sets up the boiler during initial startup
  • Recognizes Natural or LP Gas, no conversion kit required
  • Primary/Secondary LABOR SAVER™ Manifold Included
  • FREE 2-YEAR PARTS & LABOR
  • 7:1 Turndown Modulation Ratio in DHW Mode
  • 5.5:1 Turndown Modulation Ratio in Heating Mode
  • 316L Stainless Steel Heat Exchanger and Burner.
  • Assembled Boiler with Jacket, Induced Draft Fan, High limit sensors
  • 30psi Relief Valve, Low Water Pressure Switch, Temperature/Pressure Gauge
BW9

Performance™ 90 Gas- Fired Boiler

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Model Family: BW9
Annual Fuel Utilization Efficiency: 90% AFUE
Energy Star Rated: All sizes are ENERGY STAR® qualified
Heat Exchanger Warranty: 15-year heat exchanger limited warranty
Warranty: 10-year parts limited warranty if registered in 90 days
Manufacturer's Stated Benefits:
  • Integrated boiler control
  • Cast-aluminum heat exchanger
  • Pressure-relief valve
  • Gas-fired, hot-water output
  • Stainless steel burners
  • Dependable, hot surface ignition
  • Single-stage gas valve

Weil-McLain Gas Boilers

EVG

Evergreen Gas Boiler

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Model Family: EVG
Annual Fuel Utilization Efficiency: Up to 96.5% AFUE
Energy Star Rated: ENERGY STAR® Most Efficient 95% AFUE* rating
Heat Exchanger Warranty: 12 Year Heat Exchanger Warranty
Warranty: 5 Year Parts Warranty
Manufacturer's Stated Benefits:
  • Stainless Steel Fire Tube Heat Exchanger with non-metallic base
  • Floor Standing Boiler with optional wall mount kit
  • Modulating Condensing Boiler with 10:1 Turndown
  • 4 Pump/Auxiliary Outputs
  • Up to 8 Multiple Boiler Control with lead/lag rotation
  • Modbus® to BMS connectivity
  • Each input can be assigned to a priority (Up to 3 Priorities)
  • Multiple Inputs can be assigned one priority (Zone Based Control)
  • All Lag Boiler Inputs and Output can be used
  • 0-10 Volt Input (modulation or set point)
  • Configurable Auxiliary Input/Output System
  • Boiler Circulator Included
UG

Ultra S4 Gas Boiler

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Model Family: UG
Annual Fuel Utilization Efficiency: Up to 94% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 12 Year Heat Exchanger Warranty
Warranty: 2 Year Parts Warranty
Manufacturer's Stated Benefits:
  • Gas fired water boiler with cast aluminum heat exchanger
  • Venturi mixing body mixes air and gas providing higher efficiency
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority standard
  • Negative regulated gas valve precisely delivers gas to the boiler
  • U-Control gives you the power for easy set-up and maintenance
  • Modulates with 5 to 1 turn-down ratio
  • Variable speed motor matches combustion output to heating needs
  • High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications
CGi series 3

CGi Gas Boiler Series 3

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Model Family: CGi series 3
Annual Fuel Utilization Efficiency: Up to 85% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: 20 Year Heat Exchanger Limited Warranty
Warranty: 2 Year Parts Limited Warranty
Manufacturer's Stated Benefits:
  • Gas fired water boiler with cast iron sections
  • Natural draft and direct exhaust capability
  • Can be used with natural or propane gas
  • All units are factory-tested
  • Compact design saves valuable living space
  • No vertical draft hood and no mechanical vent dampe
  • Intermittent electronic ignition with standard components for easy servicing
CGa Series 2

CGa Gas Boiler Series 2

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Model Family: CGa Series 2
Annual Fuel Utilization Efficiency: Up to 84% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: 12 Year Heat Exchanger Limited Warranty
Warranty: 2 Year Parts Limited Warranty
Manufacturer's Stated Benefits:
  • Compact design saves valuable living space
  • Stainless steel burners for quieter ignition, longer life, and improved combustion
  • Gas fired water boiler with cast iron sections
  • Easily accessible controls, vertical flueways and top cleaning for easy and quick servicing

Oil Boiler Product Offering

BW5

Performance™ 86 Oil- Fired Boiler

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Model Family: BW5
Annual Fuel Utilization Efficiency: Up to 86.5% AFUE
Energy Star Rated: Select sizes are ENERGY STAR® qualified
Heat Exchanger Warranty: 20-year heat exchanger limited warranty
Warranty: 10-year parts limited warranty if registered in 90 days
Manufacturer's Stated Benefits:
  • Integrated boiler control
  • Cast-iron heat exchanger
  • Pressure-relief valve
  • Oil-fired, hot-water output
  • Tankless coil domestic hot-water production
  • Beckett or Riello oil burners
  • Electronic spark to pilot ignition

Weil-McLain Oil Boilers

ULTRA

Ultra Oil Boiler

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Model Family: ULTRA
Annual Fuel Utilization Efficiency: 87% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 12 Year Limited Heat Exchanger Warranty
Warranty: 2 Year Limited Warranty
Manufacturer's Stated Benefits:
  • Optional Advanced Features Module that provides indoor/outdoor reset, DHW priority, stage firing and more
  • Dedicated water-only oil boiler
  • Flexible direct or chimney venting - no power assisted fan needed
  • Reversible swing-away burner door
  • Three-pass cast iron heat exchanger with captured elastomer seals
WGO

WGO Oil Boiler

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Model Family: WGO
Annual Fuel Utilization Efficiency: Up to 87% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 20 Year Limited Heat Exchanger Warranty
Warranty: 2 Year Limited Warranty
Manufacturer's Stated Benefits:
  • Dedicated water-only oil boiler with cast iron sections - no tankless heater or cover plate
  • Quick open top and swing-away burner door with full chamber access increases visibility for inspection and servicing
  • Two flue outlets- rear and top - for complete venting flexibility
  • Recessed target wall design protects unit from flue brushes
  • Includes factory-wired circulator, service switch and Weil-McLain exclusive captured elastomer seals for added reliability
WTGO

WTGO Oil Boiler

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Model Family: WTGO
Annual Fuel Utilization Efficiency: Up to 87% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 20 Year Limited Heat Exchanger Warranty
Warranty: 2 Year Limited Warranty
Manufacturer's Stated Benefits:
  • Oil-fired water boiler with cast iron sections
  • High capacity / high efficiency tankless heater
  • Quick open top and swing-away burner door with full chamber access increases visibility for inspection and servicing
  • Includes factory-wired circulator, service switch and Weil-McLain exclusive captured elastomer seals for added reliability
  • Recessed target wall design protects unit from flue brushes
  • Two flue outlets- rear and top - for complete venting flexibility
  • Available assembled or as a knockdown for installation areas with limited space
SGO

SGO Oil Boiler

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Model Family: SGO
Annual Fuel Utilization Efficiency: 84% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: 10 Year Limited Heat Exchanger Warranty
Warranty: 2 Year Limited Warranty
Manufacturer's Stated Benefits:
  • Oil-fired steam boiler with cast iron sections and tankless heater opening
  • Has large water content for longer steaming times
  • Two flue outlets- rear and top - for complete venting flexibility
  • Includes factory-wired circulator, service switch and Weil-McLain exclusive captured elastomer seals for added reliability
  • Quick open top and swing-away burner door with full chamber access increase visibility for inspection and servicing
  • Recessed target wall design protects unit from flue brushes