Contact UsCall Now 

Quick Help Topics

Boilers

Boilers

Weil-McLain and HTP logos

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.

Weil McClain Gas Boiler Product Offering

Eco Tec

ECO Tec

View Brochure
Model Family: Eco Tec
Annual Fuel Utilization Efficiency: 95% AFUE
Energy Star Rated: ENERGY STAR®
Heat Exchanger Warranty: 12-year limited warranty
Warranty: 2-year Limited Warranty
Manufacturer's Stated Benefits:
  • Heat only sizes: 80, 110, 150 , 199 MBH
  • Combi sizes: 110,150,199 MBH (up to 5.4 GPM)
  • Wall or floor base mounting options
  • Stainless steel firetube heat exchanger design
  • Unity 2.0 control with color touch screen
EVG

Evergreen Gas Boiler

View Brochure
Model Family: EVG
Annual Fuel Utilization Efficiency: 95% AFUE
Energy Star Rated: ENERGY STAR® Most Efficient 95% AFUE* rating
Heat Exchanger Warranty: 12 Year Heat Exchanger Warranty
Warranty: 5 Year Parts Warranty with Registration within 90 days of installation
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

View Brochure
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 4

CGi Gas Boiler Series 4

View Brochure
Model Family: CGI Series 4
Annual Fuel Utilization Efficiency: 84% AFUE
Energy Star Rated: No
Heat Exchanger Warranty: 20-Year 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
  • Now with built-in low water cut off functionality
  • Intermittent electronic ignition with standard components for easy servicing
  • No vertical draft hood and no mechanical vent damper
  • Compact design saves valuable living space

Weil McClain Oil Boiler Product Offering

UG-***

Ultra Oil Boiler

View Brochure
Model Family: UG-***
Annual Fuel Utilization Efficiency: 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:
  • 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

View Brochure
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

View Brochure
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

View Brochure
Model Family: SGO
Annual Fuel Utilization Efficiency: Up to 85% 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

HTP Gas Boilers

EFT-***

Elite FT – Heating Boiler

View Brochure
Model Family: EFT-***
Annual Fuel Utilization Efficiency: Up to a 95.1% AFUE
Energy Star Rated: Energy Star
Heat Exchanger Warranty: 12 Year Limited Warranty
Warranty: 1 Year Limited Warranty
Manufacturer's Stated Benefits:
  • Outdoor reset lowers operating set point automatically to increase system efficiency
  • Modulating burner input matches system load, conserving energy and increasing system efficiency
  • Low NOx emission - Reduces environmental impact
  • Unbeatable combined vent length of up to 150 ft 3” PVC pipe
EFTU-******

Elite Fire Tube Ulta Condensing Boiler and Combi Unit

View Brochure
Model Family: EFTU-******
Annual Fuel Utilization Efficiency: Up to 96% AFUE
Energy Star Rated: Energy Star Rated
Heat Exchanger Warranty: 15 Year Limited Warranty
Warranty: 15 Year Limited Warranty
Manufacturer's Stated Benefits:
  • 10:1 turndown ratio limits short cycling and provides more efficient energy consumption
  • Built-in automatic bypass eliminates expensive primary / secondary piping
  • Equipped with a built-in highly efficient ECM Pump
  • Whisper Quiet Operation
  • Easy to Use Interface
EFTU-******

Elite Fire Tube Ulta Condensing Boiler and Combi Unit

View Brochure
Model Family: EFTU-******
Annual Fuel Utilization Efficiency: Up to 96% AFUE
Energy Star Rated: Energy Star Rated
Heat Exchanger Warranty: 15 Year Limited Warranty
Warranty: 15 Year Limited Warranty
Manufacturer's Stated Benefits:
  • 10:1 turndown ratio limits short cycling and provides more efficient energy consumption
  • Built-in automatic bypass eliminates expensive primary / secondary piping
  • Equipped with a built-in highly efficient ECM Pump
  • Whisper Quiet Operation
  • Easy to Use Interface
PHR***-**

The Pioneer

View Brochure
Model Family: PHR***-**
Annual Fuel Utilization Efficiency: Up to 95% AFUE
Energy Star Rated: Energy Star Rated
Heat Exchanger Warranty: 12 year limited warranty
Warranty: 12 year limited warranty
Manufacturer's Stated Benefits:
  • Modulation provides a 5:1 turndown ratio
  • Thermal mass in the stainless steel tank provides a buffer against cycling during low load conditions
  • Low maintenance & space saving design
  • Retro-fit: ideal for replacement systems, minimize the changes to piping; no primary secondary piping needed
  • Built in dirt & air separator
  • The heat exchanger is immersed in water and protected against "flashing" due to low flow condition