Rated with up to 92.1% AFUE Self-diagnostic integrated furnace control board (IFC) Silicon nitride hot surface igniter Multi-port, in-shot burners Insulated heat exchanger compartment Tubular, stainless steel heat exchanger
| Make | Trane |
|---|---|
| Manufacturer | Trane |
| Model code | S9B1B040U3 |
| Series | S9B1 |
| Configuration | Upflow/Horizontal |
| Annual Fuel Utilization Efficiency | 92.1 % |
| Additional info |
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