This Goodman 80% AFUE 40,000 BTU GM9S800403AX Low NOx Upflow/Horizontal Furnace has some cosmetic damage incurred during shipping. For detailed photos please click 'See Additional Images' above. This Goodman 80% AFUE 40,000 BTU GM9S800403AX Low NOx Upflow/Horizontal Furnace meets the full manufacturer's specifications, comes with the full manufacturer's warranty, and includes Alpine's premium guarantee.

For product specs and photographs of product in its original condition, click here.
 

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 GM9S800403AN instead.

The Goodman® GM9S8 series of standard efficiency, single stage furnaces are multi-position, making them the perfect choice whether you are installing in a basement, closet, alcove or attic.  The patented aluminized-steel tubular heat exchanger and durable Silicon Nitride Hot Surface Ignition system combined with the heavy-gauge, reinforced, insulated steel cabinet and durable baked enamel finish ensure years of trouble-free performance.  Manufactured by Goodman in the U.S.A., you get one of the best warranties in the industry, all at an unbeatable price.

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 4 speed settings 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.