Description
| Model Family: 987MB |
| Annual Fuel Utilization Efficiency: Up to 98.3% AFUE |
| Energy Star Rated: ENERGY STAR® |
| Blower Motor: Variable-speed full-featured ECM |
| Gas Valve: Modulating |
| Fan Heating Operation: Modulating |
| Factory Warranty Parts: 10-year parts limited warranty upon registration |
| Heat Exchanger Warranty: Lifetime limited warranty |
| Sound Level: QuieTech™ |
