Our Freedom^® furnaces range in efficiency from 80 to more than 92 percent. Every member of the family is designed to provide maximum heat for minimum fuel usage. However, as you climb the ladder from single-stage to two-stage and variable speed Comfort-R™ furnaces, you'll find an increasing number of benefits along the way. For example, two-stage heating makes a big difference during those transitional seasons when you need just a little heat to take the chill out of the air. And, our variable speed Comfort-R™ furnaces are perfect for removing moisture during humid summer months.

Freedom 90^® Comfort-R™ - Gas Furnace Benefits:

• Induced draft venting
• Multi-port in-shot burners
• Adaptive hot surface silicon nitride igniter
• Sealed combustion
• Aluminized steel heat exchanger
• Heavy steel insulated cabinet
• Self-diagnostic controls
• AL29-4C™ stainless steel secondary heat exchanger
• Internal vent pipe
• 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.
• Dual door latches
• Cleanable filter
• Spring-loaded filter rack
• Automotive grade gaskets and insulated blower door
• Direct vent option
• Two-stage gas valve
• Variable speed draft inducer

• Exclusive Comfort-R™ enhanced cooling⁄dehumidification mode
• Specifications