High-efficiency, gas-fired water boiler
Here are some of the top features of the GWB9-IH:
Efficiency rating of 90% AFUE.
ENERGY STAR® certified which means it meets or exceeds U.S. federal guidelines for energy efficiency.
Cast-aluminum 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.
- 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
- Cast-aluminum heat exchanger—transfers heat up to three times faster than traditional cast iron exchangers
- ENERGY STAR® certified—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
- 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 fueled by natural or LP* gas
- 15-Year Limited Warranty on heat exchanger
- 10-Year Limited Warranty on covered components
Product Brochures and ManualsLennox GWB9-IH Boiler
*Shipped as natural gas; field convertible to LP.