Two Stage IIS 80 Furnace
Tempstar® SmartComfort™ IIS 80 Two-Stage Gas Furnace
Multiple Stages For Maximum Comfort
You may wonder why your furnace turns on and off frequently, causing uncomfortable temperature swings. That’s caused by the quick heat-up and shut-down cycle of a single-stage system. In the two-stage system, the furnace automatically adjusts to the temperature—normally operating at a quieter, primary stage and adjusting to full capacity to boost heat as temperatures drop. The integrated control system adjusts the flow of gas and combustion fan to each stage. Tempstar® Heating and Cooling Products also builds every unit for minimal operating noise with features ranging from a sturdy steel cabinet that is thermal lined and insulated to a sealed blower compartment and soft-mount components.
Peace Of Mind Warranty Protection
Every Tempstar unit is backed by exceptional warranties, including our No Hassle Replacement™ limited warranty*, which gives you a replacement unit if the heat exchanger should fail within the first five years. You also get up to a 10 year parts limited warranty* and a 20 year limited warranty on the heat exchanger. And don’t forget to ask us about HELP extended service agreements for additional worry-free protection.
The Heart Of The System: The Heat Exchanger
The proven RPJ® (Rigid Press Joint) heat exchanger is designed to force more heat to the outside surface for higher efficiencies, and it’s constructed of tough corrosion resistant aluminized steel. The weld-free interlocking clamshell design reduces cracking or separating over the life of the gas furnace. And you can count on energy savings with an 80% AFUE rating.