Tempstar® SmartComfort™ IIS80

Two-Stage Gas Furnace

Reliable

Direct Hot Surface Ignition System features an advanced silicon nitride igniter and in-shot burners for greater reliability.

Safe

Temperature limit control, reliable gas valve and induced draft motor plus a patented draft safety switch that shuts off the furnace if a vent blockage is detected.

Quiet

Solid pre-painted steel insulated cabinet with tight-fit door latch system, blower motor isolated behind a sealed door, and soft-mount rubber gaskets on key components lower operating sounds.

Comfort

Two-stage redundant gas valve and two-speed induced draft blower adjust to the higher or lower settings when more or less heat is needed, then heated air is delivered by a PSC blower. The IIS 80 is also compatible with two-stage cooling, and its advanced dehumidification capability can reduce additional moisture in the air when you add a humidity-sensing thermostat to your system.

System Control

State-of-the-art electronic controls monitor system operation and allow for faster, easier system diagnostics.

• 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.
• 20 year limited warranty* on the heat exchanger.
• 10 year limited warranty* on all functional parts.