10 years Limited on Parts and Lifetime Limited on Heat Exchanger

80% AFUE efficiency rating - compared to an older furnace, this can potentially save you hundreds of dollars per year in energy costs|Pro Series™ system - pair this model with a Pro Series™ variable-capacity or 2-stage air conditioner or heat pump and a Comfort Sync™ thermostat, for optimum performance|With the Pro Series™, you're in control of every aspect of your home's climate, as well as your energy costs, explore the Armstrong Air® Pro Series™|2-stage heating - rather than being all on or all off, your furnace can adjust its heat output based on conditions inside and outside your home, so you use less energy to maintain comfort|Variable speed fan motor - by changing the speed of its airflow during start-up, your furnace can adjust humidity levels and create more even temperatures throughout your home, while enhancing efficiency and reducing operating noise|Comfort Sync™ thermostat - when you pair this model with the Comfort Sync™ thermostat, the system will continuously monitor internal components for optimum performance|Comfort Sync™ puts you in total control of your home environment with remote temperature adjustment from anywhere in the world, even your couch, via smartphone app|When Comfort Sync™ detects that repairs and regular maintenance are needed, it alerts you or your dealer instantly, so your perfect environment never end|Quiet Combustion™ technology - uses a smaller btu input per burner for quieter start-up and operation while providing more even heat distribution|EHX™ technology - every Armstrong Air® furnace is engineered and built with EHX™ technology, a patented design that eliminates the hot spots that can shorten furnace life|EHX™ technology makes heat exchangers more durable and with its advanced airflow system, more air contacts the heat exchanger surface area for greater heat exchange, enhancing efficiency and comfort

AHRI Certified|CSA Certified