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Goodman 40,000 BTU 80% AFUE Upflow/Horizontal Gas Furnace Model GMH80403AN
Goodman Gas Furnace Model GMH80403AN

Goodman 40,000 BTU 80% AFUE Upflow/Horizontal Gas Furnace Model GMH80403AN

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Goodman 40,000 BTU 80% AFUE Upflow/Horizontal Gas Furnace Model GMH80403AN

The Goodman GMH80403AN 40,000 BTU 80% AFUE Performance Upflow gas furnace system incorporates multiple components that improve the overall efficiency and comfort of your home. The GMH8 furnaces include the legendary, award winning, durable aluminized steel, restructured into a dual diameter configuration which vastly increases the efficiency, reliability and durability of the furnace. In addition to this, this furnace incorporates a strongly insulated, heavy gauged steel cabinet that helps in keeping the sound levels to a minimum level, providing quiet and pleasant heating for your home.

This furnace features a patented aluminized steel tubular heat exchanger combined with a strongly built Silicon Nitride hot surface ignition system. The entire unit is trial tested prior to shipment for both heating and the heating/cooling system combinations. Originally, the GMH8 furnaces are meant to burn natural gas but it can be converted to a propane gas burning unit using an optional LPM-06 field installed propane conversion kit if the user wants it that way. Moreover, the Goodman GMH8 40,000 BTU 80% AFUE furnace requires a single stage thermostat whose stages of heating are controlled by a digital timer installed in the control board.

Standard Features

  • Dual-diameter tubular heat exchanger
  • Two-stage gas valve control technology allows 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, colorcoded 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
  • Designed for multi-position installation: upflow, horizontal left or right
  • 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

Gas Furnace Brochure | Gas Furnace Specifications | Installation Instructions

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