Trane > XL Furnace Grid
| XL90 | XL80 | |
| AFUE | Up to 93 | 80 |
| Energy Star | Yes | No |
| Convertible | Yes | Yes |
| Blower Speed | Four-Speed | Four-Speed |
| Heating Stages | Two | Two |
| Extended Warranty | Optional Available | Optional Available |
| Registered Limited Warranty | Lifetime Heat Exchanger, 5-year functional parts | Twenty-year Heat Exchanger, 5-year Functional Parts |
