| Practice Number | Practice | Points Available with this Product | Additional Conditions of Use to Earn Points | Manufacturer's Comments |
| 703.4.2 | Furnace and/or boiler efficiency is in accordance Table 703.4.2(1), (2), (3), or (4). | 0-17 | The AHRI certificate (available from the HVAC contractor) must show efficiency rating appropriate for the climate zone and points. When multiple units are installed points are awarded for the least efficient system. | Lennox Furnaces with efficiency ratings ranging from 90 - 95% AFUE. Additional information is available at www.Lennox.com. |