- Heavy-duty aluminized-steel tubular heat exchanger
- Stainless-steel secondary heat exchanger
- Single-stage gas valve
- Durable Silicon Nitride Igniter
- Quiet single-speed induced draft blower
- Self-diagnostic control board with constant memory fault code history output to an LED
- Color-coded low-voltage terminals with provisions for air cleaner and humidifier
- Cabinet air leakage (QLeak) = <2%
- All models comply with California
- 40 ng/J Low NOx emissions standards
40,000 BTU 92% Efficiency, Single-Stage Burner, Single-Speed Blower, Upflow Application Gas FurnaceGMSS920402BN 40,000 BTU 92% Efficiency, Single-Stage Burner, Single-Speed Blower, Upflow Application Gas Furnace
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