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Wonderful office staff! A very fine young man who serviced my heater. Keep up the GREAT job you have been doing!!

W.G., Williamstown

Ultra Oil Boiler

3-pass cast iron high efficiency heat exchanger

- 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
- Energy Star Rating

WGO Oil Boiler

High Efficiency Oil Boiler (Water)

- Energy Star Rating
- 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
- Dedicated water-only oil boiler with cast iron section - no tankless heater or cover plate
- 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 Oil Boiler

High Efficiency Oil Boiler - Tankless Heater (Water)

- 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
- Oil-fired water boiler with cast iron sections
- Energy Star Rating
- Available assembled or as a knockdown for installation areas with limited space

SGO Oil Boiler

Oil Boiler with Tankless Heater Opening (Steam Or Water)

- 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

Ultra Series 3 Gas Boiler

Ultra Series 3 delivers peace of mind, unmatched comfort, and immediate payback in energy savings.

- Free 5-year Parts & Labor Warranty
- 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
- U-Control gives you the power for easy set-up and maintenance
- Negative regulated gas valve precisely delivers gas to the boiler
- 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
- *Ultra 310 93.3% AFUE rating is a gross output and combustion efficiency.
- Assembled in our "state of the art" manufacturing facility in Eden, North Carolina, USA

GV Gas Boiler

High Efficiency Gas, Power Vented Boiler (Water)

- Gas-fired direct vent water boiler with cast iron sections
- Uses sealed combustion technology which reduces energy usage by eliminating air infiltration
- Control module and ignition control with mistake-proof wiring and diagnostic indicator lights
- On-board pictorial wiring diagrams and troubleshooting guide
- Fast power hookup with external J-box and pre-stripped wires
- Low NOx Certified by South Coast Air Quality Management District (Rule 1146.2) in California
- Easily accessible components, and fewer parts for quick and easy servicing
- Energy Star Rating
- Simple propane conversion

CGi Gas Boiler

High Efficiency Gas, Induced Draft Boiler (Water)

- Gas fired water boiler with cast iron sections
- Direct vent capability
- Can be used with natural or propane gas
- All units are factory-tested, and include a limited lifetime warranty on cast iron sections
- Compact design saves valuable living space
- No vertical draft hood and no mechanical vent damper
- Intermittent electronic ignition with standard components for easy servicing

CGs Gas Boiler

High Efficiency Gas, Direct Vent Boiler (Water)

- Uses sealed combustion technology which reduces energy usage by eliminating air infiltration
- Compact design saves valuable living space
- Control module and ignition control with mistake-proof wiring and diagnostic indicator lights
- Uses stainless steel burners for quieter ignition, longer life, and improved combustion.
- Easily accessible controls, vertical flueways and top cleaning for easy and quick servicing
- Gas fired water boiler with cast iron sections

CGt Gas Boiler

High Efficiency Gas, Tankless Heater (Water)

- The CGt is available in one size and has a built-in tankless heater as standard equipment.
- The CGt gas boiler from Weil-McLain offers a compact design boiler that also provides domestic hot water.
- Other features include high-grade stainless steel burners, integrated control module and venting flexibility.

CGa Gas Boiler

Atmospheric Gas Boiler (Water)

- Control module and ignition control with mistake-proof wiring and diagnostic indicator lights
- 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

EG Gas Boiler

Atmospheric Gas Boiler (Water or Steam)

- Comes with automatic vent damper for higher efficiencies and reduced fuel consumption
- Easy access to controls for convenient servicing
- Available with standing pilot or intermittent electronic ignition
- A versatile gas cast iron boiler for water or steam applications