| 1. | Induced draft venting quietly draws hot 
                                      gases through the heat exchanger, 
                                      maximizing the heat transfer efficiencies 
                                      of the exchanger design. | 
                                    
                                      | 2. | Multi-port in-shot burners perfectly shape 
                                      the flame cone for the maximum heat 
                                      possible while using less fuel. | 
                                    
                                      | 3. | Adaptive silicon nitride hot surface 
                                      igniter starts burning electrically for 
                                      safe, efficient operation. There's no 
                                      pilot light constantly burning fuel. | 
                                    
                                      | 4. | Aluminized steel heat exchanger is 
                                      crimped, not welded, to prevent cracks 
                                      from heat stress. Stamped serpentine 
                                      channel offers the greatest efficiency in 
                                      less space. Backed by our 20-year 
                                      non-prorated, limited warranty. | 
                                    
                                      | 5. | Heavy steel insulated cabinet holds more 
                                      heat in the furnace to better warm your 
                                      home. Also assures greater durability and 
                                      quieter operation. | 
                                    
                                      | 6. | Self-diagnostic controls are the 
                                      solid-state brain of the Freedom® 80 and 
                                      manage every function with digital 
                                      accuracy. Includes safety features and a 
                                      built-in troubleshooting system. | 
                                    
                                      | 7. | Dual door latches allow easy access to the 
                                      filter for cleaning or changing (on upflow 
                                      models only). | 
                                    
                                      | 8. | Sound insulated blower compartment assures 
                                      the quietest possible operation. | 
                                    
                                      | 9. | Cleanable filter | 
                                    
                                      | 10. | Spring-loaded filter rack automatically 
                                      adjusts for standard size off-the-shelf 
                                      filters (on upflow models only). | 
                                    
                                      | 11. | Automotive grade gaskets and insulated 
                                      blower door reduce operating sound and air 
                                      infiltration. | 
                                    
                                      | 12. | Two-stage gas valve works efficiently with 
                                      the multi-speed motor, providing only as 
                                      much fuel as each stage requires. | 
                                    
                                      | 13. | Multi-speed blower motor operates quietly 
                                      and efficiently, gently warming and 
                                      maintaining comfort. Handles all central 
                                      air conditioning needs, too. | 
                                    
                                      |  |  |