Gas Furnaces
| Model | AFUE | |
|---|---|---|
| SLP98V Variable-Capacity Gas Furnace | up to 98.2 | |
| The most efficient and quietest furnace you can buy1! | ||
| SL280V Variable Speed Gas Furnace | up to 80 | |
| The quietest furnace in its class2 | ||
| G61V High-Efficiency Gas Furnace | up to 95 | |
| High-efficiency, variable speed gas furnace | ||
| G61 Gas Furnace | up to 95 | |
| Two-stage, high-efficiency heating | ||
| G51 Gas Furnace | up to 92.1 | |
| High-efficiency, high-comfort heating | ||
| G60 Gas Furnace | up to 80 | |
| Efficient, consistent two-stage heating | ||
| G50 Gas Furnace | up to 80 | |
| Efficient, consistent home heating | ||
| G43 Gas Furnace | up to 92.1 | |
| Economical, high-efficiency gas heating | ||
| G40 Gas Furnace | up to 80 | |
| Reliable, mid-efficiency gas furnace | ||
Oil Furnaces
| Model | AFUE | |
|---|---|---|
| O23V Oil Furnace | up to 83 | |
| Variable speed for superior comfort | ||
| O25 Oil Furnace | up to 84 | |
| Clean, quiet and comfortable home heating | ||
| O23 Oil Furnace | up to 83 | |
| Clean, quiet and comfortable home heating | ||