Weil-McLain Boilers
From single-family homes to large-scale apartment complexes, the Weil-McLain name is synonymous with warmth and comfort. Our high quality gas and oil-fired boilers can be designed to fit the tightest spaces, and feature boiler controls that are easy to use and optimize operation for comfort while maximizing energy savings.
RESIDENTIAL GAS BOILERS
Weil-McLain’s line of high-efficiency residential gas boilers include the award-winning Evergreen, the Ultra, the WM97+, the ECO, the ECO Tec and the GV90+. These gas-fired boilers are compatible with either natural gas or liquid propane, require minimal maintenance, and have excellent efficiency ratings. Available for water and steam systems in sizes from 70 to 399 MBH.
CGa Gas Boiler Series 3
- Natural draft, silent operation
- Compact design saves valuable living space
- Now with built-in low water cut off functionality
- 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
- 84% AFUE
ECO Tec
- 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
Evergreen Pro Gas Boiler
- Stainless Steel Fire Tube Heat Exchanger with non-metallic base
- Floor Standing or Wall Mount Boiler (optional wall mount kit for 220-399 sizes)
- Available in 5 Sizes: 110, 155, 220, 299, 399 MBH
- Modulating Condensing Boiler
- 95% AFUE (110-299); 96.5% Combustion Efficiency (399)
- 4 Pump/Auxiliary Outputs (Example: 1 boiler loop pump +3 zone pumps)
- Up to 8 Multiple Boiler Control with lead/lag rotation
- Modbus® to BMS connectivity
GV90+ Gas Boiler
- 91% AFUE efficient
- Durable cast iron primary heat exchanger
- Condensing stainless steel secondary heat exchanger
- Unique 7 pass heat exchanger design maximizes heat transfer
- Vents with PVC
- Multiple ventilation options (direct vent, direct exhaust, concentric)
- Easy conversion to propane (kit included)
EG Series 6 Gas Boiler
- Comes with automatic vent damper for higher efficiencies and reduced fuel consumption
- Easy access to controls for convenient servicing
- Configured for Natural Gas, intermittent electronic ignition only
- A versatile gas cast iron boiler for water or steam applications
- Cast iron heat exchanger
- Up to 84% AFUE
Ultra S4 Gas Boiler
- Cast aluminum coated heat exchanger
- Up to 94% DOE AFUE efficiency
- Designed to operate in low temperature condensing applications
- Outdoor reset and domestic hot water priority
- Modulates with 5:1 turn-down ratio
- High grade stainless steel burner features quiet operation
AquaBalance Series 2
- 95% AFUE energy efficiency
- Available in 80, 120 and 155 Btu/Hr inputs sizes
- All 3 sizes available in heat-only, or combination space and domestic hot water heating versions
- Natural or Propane (LP) gas operation – shipped as NG, optional LP conversion kit available
- 1" diameter ASME certified 316L stainless steel single tube heat exchanger – low pressure drop
- 4 gallons per minute DHW 155 combi (70-degree rise )
- Internal 3-speed Grundfos circulator (combi versions only)
CGi Gas Boiler Series 4
- 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
- Compact design saves valuable living space
- No vertical draft hood and no mechanical vent damper
- Intermittent electronic ignition with standard components for easy servicing
- 84% AFUE
RESIDENTIAL OIL BOILERS
Oil-fired boilers are a great solution for residential applications. Available for both water and steam systems, high efficiency residential oil boilers from Weil-McLain are rugged, reliable, and produce more heat per BTU than a standard gas-fueled system. With the proper maintenance, a residential oil boiler can last for decades.
Ultra Oil Boiler
- 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
- Energy Star Rating
- 87% AFUE Series 3
SGO Series 4 Oil-Fired Steam Boiler
- 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 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
- 85% AFUE
WGO Series 4 Oil-Fired Water Boiler
- 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
- Available assembled or as a knockdown for installation areas with limited space
WTGO Series 4 Oil-Fired Water Boiler
- 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