High-efficiency, gas-fired water boiler

The GCWB95 Gas Fired boiler offers an AFUE rating of 95%, which means it converts a full 95% of your fuel into usable heat. It has earned the 2020 ENERGY-STAR® Most Efficient award. And it delivers warmth quickly with a cast-aluminum heat exchanger that transfers heat three times faster than conventional cast iron.

Overview

• Efficiency rating of 95% AFUE.
• ENERGY STAR® qualified which means it meets or exceeds U.S. federal guidelines for energy efficiency.
• Stainless Steel heat exchanger transfers heat up to three times faster than traditional cast-iron exchangers.
• Easy integration with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures.

Energy Efficiency

• Stainless Steel heat exchanger—transfers heat up to three times faster than traditional cast iron exchangers
• ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency, which means energy savings
• Electronic ignition control—monitors water temperature and maximizes efficiency by turning on the burner only when needed

Home Comfort

• Faster heating times deliver both home heating and hot water on demand
• Sealed combustion—minimizes fan noise and provides quiet, soothing heat
• Easy integration—low temperature supply and return water makes the unit compatible with existing radiant and underfloor systems

Reliable Performance

• Self commissioning allows this combination bioler to make its own adjustments during installation for immediate comfort
• Durable cabinet—heavy-gauge steel cabinet and baked-on paint finish
• Compact and versatile—allows easy installation in a basement, closet or alcove enclosure, and can be fuelled by natural or LP* gas

*Shipped as natural gas; 050 and 075 models are convertible to LP.

Warranty

• 15-Year Limited Warranty on Heat Exchanger.
• 10-Year Limited Warranty on covered components.

Brochure

Standard-efficiency, gas-fired water boiler

The GWB84-IE boiler is full of features that provide years of heating benefits, including a cast-iron heat exchanger and titanium burners. With efficiency ratings of up to 84.4%, the GWB84-IE can also deliver significant energy savings, compared to an older boiler.

Overview

• Electronic ignition control burns fuel only as necessary, reducing energy costs.
• Cast iron heat exchanger designed for long-lasting durability.
• Easy integration with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures.

Energy Efficiency

• Electronic ignition control—monitors water temperature and maximizes efficiency by turning on the burner only when needed
• Thick fiberglass insulation—minimizes off-cycle heat and energy loss

Home Comfort

• Sealed-combustion design—provides quiet, healthy and draft-free heating
• Easy integration—works with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures

Reliable Performance

• Cast iron heat exchanger—designed for years of long-lasting reliability
• Titanium burners—provide greater resistance to corrosion and oxidation than competitive stainless or aluminized steel burners
• Versatile installation—available in six sizes for installation virtually anywhere in the home, and can be fueled by natural or LP* gas

*Shipped as natural gas; convertible to LP.

Documentation

Brochure

Standard-efficiency, gas-fired water boiler

Constructed of high-quality materials, including a cast iron heat exchanger and stainless steel burners, the GWB84-E boiler delivers reliable heating performance season after season.

Overview

• 84% AFUE meaning it can deliver energy savings compared to an older boiler
• Electronic ignition control burns fuel only as necessary, reducing energy costs.
• Cast iron heat exchanger designed for long-lasting durability.
• Easy integration with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures.

Energy Efficiency

• Electronic ignition control—monitors water temperature and maximizes efficiency by turning on the burner only when needed
• Thick fiberglass insulation—minimizes off-cycle heat and energy loss
• Vent damper—automatically closes when the boiler turns off, maintaining energy efficiency

Home Comfort

• Easy integration—works with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures

Reliable Performance

• Cast iron heat exchanger—designed for years of long-lasting reliability
• Versatile installation—available in nine sizes for installation virtually anywhere in the home, and can be fueled by natural* or LP gas
• Stainless steel burners—provide greater resistance to corrosion and oxidation**

*Shipped as natural gas; convertible to LP.
**262 and 299 models feature Titanium Burners.

Documentation

Brochure