GWB9-IH High Efficiency Condensing Boiler
High efficiency, single stage boiler.
- ENERGY STAR qualified, efficiency up to 90% AFUE
- Electronic control—monitors water temperature and maximizes efficiency by turning on the burner only when needed.
- Sealed combustion—minimizes fan noise and provides quiet, soothing heat
- Cast-aluminum heat exchanger—transfers heat up to three times faster than traditional cast iron exchangers.
- Limited warranty–15 years on heat exchanger, 10 years on remaining covered components