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

Energy Efficiency

• Cast-aluminum 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

Reliable Performance

• Quality materials—constructed of heavy-gauge steel and corrosion-resistant aluminum alloy for long-lasting durability
• Compact and versatile—allows easy installation in a basement, closet or alcove enclosure, and can be fueled by natural* or LP gas
• 15-year limited warranty on heat exchanger
• 10-year limited warranty on remaining covered parts

Lennox GWB9 Water Boiler

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

Energy Efficiency

• Beckett® oil burner—sets the standard for reliable, fuel-efficient heating
• Optional tankless coil—provides virtually free hot water, even during the coldest winter months

Reliable Performance

• Cast-iron heat exchanger—designed for long-lasting durability
• 20-year limited warranty on heat exchanger
• 1-year limited warranty on remaining covered parts

Lennox COWB2 Boiler

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

Energy Efficiency

• Electronic ignition—burns fuel only as necessary, reducing energy costs
• Thick fiberglass insulation—minimizes off-cycle heat loss
• Induced draft fan—optimizes venting of combustion gases for greater heat transfer and efficiency

Reliable Performance

• Quality materials—constructed of cast-iron and corrosion-resistant titanium for long-lasting durability
• Versatile installation—available in six sizes for installation virtually anywhere in the home, and can be fueled by natural* or LP gas
• 20-year limited warranty on heat exchanger
• 1-year limited warranty on remaining covered parts

*Shipped as natural gas; convertible to LP

Lennox GWB8-IE Water Boiler

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

Energy Efficiency

• Electronic ignition—burns fuel only as necessary, reducing energy costs
• Thick fiberglass insulation—minimizes off-cycle heat loss
• Vent damper—automatically closes when the boiler turns off, maintaining energy efficiency

Reliable Performance

• Quality materials—constructed of cast-iron and corrosion-resistant titanium for long-lasting durability
• Versatile installation—available in seven sizes for installation virtually anywhere in the home, and can be fueled by natural* or LP gas
• 12-year limited warranty on heat exchanger
• 1-year limited warranty on remaining covered parts

*Shipped as natural gas; convertible to LP

Lennox GSB8-ES Water Boiler

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

Energy Efficiency

• Electronic ignition—burns fuel only as necessary, reducing energy costs
• Thick fiberglass insulation—minimizes off-cycle heat loss
• Vent damper—automatically closes when the boiler turns off, maintaining energy efficiency

Reliable Performance

• Quality materials—constructed of cast-iron and corrosion-resistant titanium for long-lasting durability
• Versatile installation—available in eight sizes for installation virtually anywhere in the home, and can be fueled by natural* or LP gas
• 20-year limited warranty on heat exchanger
• 1-year limited warranty on remaining covered parts

Lennox GWB8-ES Water Boiler