Tempstar® SmartComfort™ IIS 80
Two-Stage Gas Furnace
Direct Hot Surface Ignition System features an advanced silicon nitride igniter for years of reliable starts.
Our patented RPJ® III aluminized steel heat exchanger is the heart of furnace efficiency. The unique integrated ripple-edged design forces more heat to the outside surface area for higher efficiencies.
Heating On Demand
Two-stage redundant gas valve, two-speed induced draft blower assembly, and variable-speed motor operate normally at the lower stage and ramp up as needed.
The multispeed circulation blower is designed to operate quietly, and the cabinet is thermally lined and insulated to reduce noise.
State-of-the-art electronic controls monitor system operation and allow for advanced diagnostics, a timesaving tool for technicians.
- Energy-saving high efficiency operation of 80% AFUE.
- Two-stage system reduces temperature and humidity swings in the home by heating and cooling more evenly.
- 5 year No Hassle Replacement™ limited warranty* gives you a replacement unit if the heat exchanger should fail within the first five years.
- 25 year limited warranty* on the heat exchanger.
- 10 year limited warranty* on all functional parts.