Induced draft venting quietly draws hot gases through the heat exchanger, maximizing the heat transfer efficiencies of the exchanger design.

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

Adaptive hot surface silicon nitride igniter starts burners electrically for safe, efficient operation. There's no pilot light constantly burning fuel.

Aluminized steel heat exchanger is crimped, not welded, to prevent cracks from heat stress. Stamped serpentine channel offers greatest efficiency in less space. Backed by our 20-year, non-prorated, limited warranty.

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

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.