California ONLY!  Unless you plan to install this furnace in the state of California, you do not need this California-only Low NOx model.  Consider the GC9S800603AN instead.  

The Goodman GC9S8 dedicated downflow (blows air into ducts located below it) /horizontal flow gas furnaces features a patented aluminized steel tubular heat exchanger and high-efficiency hot surface ignition system. These furnaces are run-tested for heating or combination heating/cooling applications. With a heavy-gauge, reinforced, wrap-around insulated steel cabinet and durable baked enamel finish, these gas heaters can be installed in a utility room, closet, alcove, basement or attic. (Not intended for use in mobile homes.)

Important Safety Notice

Furnace Features

• Operates as a natural gas furnace out of the box, and can be easily converted to a propane furnace with optional propane conversion kit (see Accessories tab).
• Heavy-duty aluminized-steel dual-diameter tubular heat exchanger
• Single-stage gas valve
• Durable Hot-surface igniter
• Quiet, single-speed draft induced
• Self-diagnostic control board
• Color-coded low-voltage terminals
• Multi-speed ECM blower motor with four speed setting for heat and 9 speed settings for cooling
• Convenient left or right connection for gas and electrical service
• Heavy-gauge steel cabinet with durable baked-enamel finish
• Foil faced insulated heat exchanger

Outstanding Warranty Protection

This furnace is covered by what we believe to be one of the best warranties in the indoor home comfort industry. In addition to covering the heat exchanger with a Lifetime Limited Warranty to the original, registered homeowner, if the heat exchanger fails during the first 2 years of ownership, we will replace the entire unit for as long as you own your home. This furnace also has a 10-Year Limited Parts Warranty on all functional parts. For a full description of all warranties applicable to this product, please review the consumer brochure or product warranty in the Documents section.