

| Lennox G51 | |
|---|---|
| Energy Efficiency | Up to 92.1% AFUE |
| Quiet Operation | Fully Insulated |
| Variable Speed Motor | No |
| Stages of Heating | 1 |
| Orientation | 4-Way Multi-Position |
| Enhanced Humidity Control | No |
| Ultralow Constant Fan | Low speed |
| Insulated Blower Compartment | Yes |
| Ignition | SureLight |
| Parts and Control Warranty | 5 year limited warranty on parts and controls |
| Heat Exchanger Warranty | Limited Lifetime Warranty |