1  ComfortLink™II Communicating Capability

Enables system to communicate its status and settings to the Comfort Control.

2  Communicating User Interface

Clearly displays ComfortLink II diagnostics to your installer for easy setup and service
3  Simplified Three-Wire Connection
Allows for easy installation and is less invasive to the structure of your home.

4  Variable-Speed Blower Motor wirh Comfort-R™
Allows quieter system startups and shutdowns, greater efficiency and more heat circulation. Also helps control humidity levels during summer months.
5  Variable-Speed Draft Inducer
Works with modulating gas valve to enhance efficiency, comfort and reliability.
6  Silicon Nitride Hot Surface Cabinet
Highly reliable ignition system provides longer service life.
7  Heavy Steel Insulated Cabinet
Insulated Panels hold more heat in the furnace, ensure greater durability and reduce operating sound.
8  Multi-Port In-Shot Burners
Perfectly shape the flame cone for maximum heat possible while using less fuel.

9  Automotive-Grade Gaskets and Insulated Blower Compartment
Help reduce operating sound and air filtration
10  Primary Heat Exchanger
Crimped, not welded, to prevent cracks from heat stress. Stamped sepentine channel offers the greatest efficiency in less space.
11  Direct Vent
100% fresh air option reduces heat exchanger corrosion and ensures adequate combustion air.
12  Secondary Heat Exchanger
Made of AL29-4C stainless steel to capture more of the heat you pay for.
13  Full Modulating Gas Valve
Highly reliable, proven design that operates between 40% and 100% depending on your specific heating needs, providing for ultimate comfort and greater efficiency.