Freedom 90® Comfort-R™

1. Induced draft venting
2. Multi-port in-shot burners
3. Adaptive hot surface silicon nitride igniter
4. Sealed combustion
5. Aluminized steel heat exchanger 
6. Heavy steel insulated cabinet 
7. Self-diagnostic controls
8. AL29-4C™ stainless steel secondary heat exchanger
9. Internal vent pipe
10. Variable speed blower motor operates at a lower, more efficient speed than conventional blowers. American Standard’s exclusive Comfort-R™ feature is an added bonus with variable speed. Comfort-R™ provides greater humidity control in cooling.
11. Dual door latches 
12. Cleanable filter
13. Spring-loaded filter rack 
14. Automotive grade gaskets and insulated blower door
15. Direct vent option
16. Two-stage gas valve 
17. Variable speed draft inducer

Freedom 90® Two-Stage

1. Induced draft venting
2. Multi-port in-shot burners
3. Adaptive hot surface silicon nitride igniter
4. Sealed combustion
5. Aluminized steel heat exchanger 
6. Heavy steel insulated cabinet 
7. Self-diagnostic controls
8. AL29-4C™ stainless steel secondary heat exchanger
9. Internal vent pipe
10. Four speed induction blower motor operates quietly and efficiently, gently warming and maintaining comfort. Handles all central air conditioning needs, too.
11. Dual door latches 
12. Cleanable filter
13. Spring-loaded filter rack 
14. Automotive grade gaskets and insulated blower door
15. Direct vent option
16. Two-stage gas valve 
17. Variable speed draft inducer

Freedom 90® High Efficiency Single-Stage

1. Multispeed blower motor - Operates quietly and efficiently, gently warming and maintaining comfort. Handles all central air conditioning needs, too.
2. Induced draft venting - Quietly draws hot gases through the heat exchanger, maximizing the heat transfer efficiencies of the exchanger design.
3. Multi-port in-shot burners - Perfectly shape the flame cone for the maximum heat possible while using less fuel.
4. Adaptive hot surface silicon nitride igniter - Starts burners electrically for safe, efficient operation. There’s no pilot light constantly burning fuel.
5. Aluminized steel heat exchanger - Crimped, not welded, to prevent cracks from heat stress. Stamped serpentine channel offers the greatest efficiency in less space. Backed by our lifetime limited warranty.
6. Stainless steel secondary heat exchanger - Captures more of the heat you pay for.
7. Heavy steel insulated cabinet -Holds more heat in the furnace to better warm your home. Also assures greater durability and quieter operation.
8. Self-diagnostic controls - Manage every function with digital accuracy. Include safety features and a built-in troubleshooting system.
9. Sound-insulated blower compartment - Assures the quietest possible operation.
10. 100% fresh air option - Uses 100% outdoor air for combustion for increased equipment life and cleaner air.
11. Dual door latches allow easy access to the filter for cleaning or changing.
12. Cleanable filter means you can rinse or vacuum it without buying replacements each time.
13. Spring-loaded filter rack automatically adjusts for standard off-the-shelf filters.

Freedom 80® Comfort-R™

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 burners electrically for safe, efficent 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. Variable speed blower motor operates at a lower, more efficient speed than conventional blowers. American Standard's exclusive Comfort-R™ feature is an added bonus with variable speed. Comfort-R™ provides greater humidity control in cooling.

Freedom 80® Two-Stage

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 ignitor starts burning electically 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.