Tempstar® SmartComfort™ IIS 90
Two-Stage Gas Furnace
Reliable
Direct Hot Surface Ignition System features an advanced silicon nitride igniter for years of reliable starts.
Durable
The RPJ® III primary heat exchanger is made of corrosion-resistant weld-free stainless steel. 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.
Quiet
Enclosed burner, fully insulated cabinet, and solid door design result in quiet operation.
System Monitoring
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 92.1% AFUE.
- Two-stage systemreduces 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.
- Lifetime limited warranty*on the primary and secondary stainless steel heat exchanger.
- 10 year limited warranty*on all functional parts.
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