GDH Series Gas Furnace - 80% AFUE - 40K BTU - Two Stage - Dedicated Downflow - A Cabinet

The Goodman® GDH Gas Furnaces offer energy efficiencies and operating sound levels that are among the best in the heating and cooling industry. Quality manufacturing as well as easy installation and maintenance make this unit one of the best values on the market.

Standard Features

• Dual-diameter tubular heat exchanger
• Two-stage gas valve Dual$aver™ technology that allows the installer to activate the two-stage valve with the flip of a dipswitch
• 110V Silicon Nitride igniter
• Quiet four-speed direct-drive circulating blower motor
• Furnace control board with self-diagnostics, color-coded low-voltage terminals and provisions for electronic air cleaner and 24-volt humidifiers
• Control board stores the last five diagnostic codes in memory; simple push-button activation outputs the fault history to a flashing red LED
• Low constant fan allows homeowner to activate the low heat speed to efficiently circulate air throughout the home
• Self-adjusting feature automatically adjusts furnace to high- or low-stage operation based on outside temperature without an outdoor temperature sensor
• Certain models available with low NOx emissions
• Cabinet Features
• Fully insulated, heavy-gauge steel cabinet with durable baked-enamel finish
• Foil-faced insulation lines the heat exchanger compartment
• Factory-sealed to achieve 2% or less leakage rate at 1.0" water gauge external duct static pressure
• Designed for multi-position installation: Dedicated Downflow
• Removable bottom for side or bottom return applications
• Convenient left or right connection for gas/electric service
• Coil and furnace fit flush for most installations

• Parts: 10 Year Limited
• Heat Exchanger: Lifetime Limited
• Unit Replacement: 10 Year Limited