Internal vent pipe is made of long-lasting Noryl® material.

Heavy steel insulated cabinet holds more heat in the furnace to better warm your home. Also assures greater durability and quieter operation.

Multi-speed blower operates quietly and efficiently, gently warming and maintaining comfort. Handles all central air conditioning needs for year-round comfort.

Power vent fan pulls hot combustion gases through the secondary heat exchanger, so less heat escapes up the flue.

Multi-port in-shot burners perfectly shape the flame cone for the maximum heat possible while using less fuel.

Primary heat exchanger is made of heavy-duty aluminized steel for long life. Backed by our lifetime limited warranty.

AL29-4C^TM stainless steel secondary heat exchanger captures more of the heat you pay for. Backed by a lifetime limited warranty.

Adaptive hot surface silicon carbide igniter starts burners electrically, eliminating a wasteful pilot light. A real energy saver. Backed by a 3-year limited warranty (AUC/ADC models only).

Self-diagnostic, the solid state brain, controls every function of the Freedom 90 with digital accuracy, and comes complete with safety features and a built-in troubleshooting system. Backed by a 3-year limited warranty.

Cleanable filter lets you rinse or vacuum instead of buying replacements each time.