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Goodman GMH80803BN

80,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

(21 Reviews)

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  • Flat Rate Returns $30
  • Pro Installation
  • Liftgate Delivery $25
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This is a Horizontal / Upflow unit. Learn More

The Goodman® GMH8 80% AFUE Two-Stage (Convertible), Multi-Speed, Multi-Position Gas Furnace features a patented aluminized-steel tubular heat exchanger and durable Silicon Nitride Hot Surface Ignition system. This furnace is run-tested for heating or combination heating/cooling applications. With a heavy-gauge, reinforced, insulated steel cabinet and durable baked enamel finish, this unit can be installed in a variety of locations.

Please read this Important Safety Notice

Standard Features

  • Patented TuffTube™ dual-diameter tubular heat exchanger with lifetime limited warranty plus 10-year furnace replacement limited warranty (with online registration)
  • Two-stage gas valve with revolutionary new Dual$aver control technology that allows installer to turn on two-stage operation with the flip of a dipswitch
  • Silicon Nitride igniter with patented adaptive learning routine for maximum igniter life
  • Energy-saving, quiet four-speed direct-drive circulator blower motor
  • Integrated electronic furnace control board with self-diagnostics, low-voltage terminal block, and separate terminals 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 mode allows the homeowner to activate the lowest available heating speed to circulate air quietly and efficiently throughout the home during the off cycle
  • Self-adjusting feature automatically adjusts furnace to high or low stage based on outsidetemperature without outdoor temperature sensor
  • All “X” models comply with California NOx emissions standards 


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 and electric service
  • Coil and furnace fit flush for most installations

Configuration

Configuration is the direction the conditioned air will pass through the unit.

Upflow units will have the air come in from the bottom and blow out the top.

Horizontal units will have the air go through the unit left to right, or right to left.

Downflow units will have the air come in from the top of the unit, and blow out the bottom.

Unsure of what configuration your home needs? Call us at 800-865-5931. Monday through Friday, 8:30am to 5:00pm CST

Configuration
Horizontal / Upflow
Blower Cooling Capacity

The tonnage of air conditioning that can be moved effectively by the blower. You want to make sure that the blower is appropriately sized for the air conditioner. If it is too small the coil could ice up. If it is too large than the air coming out of the ducts won't be cold enough.

Blower Cooling Capacity
1.5 / 2 / 2.5 / 3 Tons
Maximum Input BTU

The maximum amount of heat that the unit can produce. The amount delivered into the space will be the input minus the efficiency loss also know as the output. For example a 100000 btu furnace at 80% efficiency will give you 80000 out btus of heat. The same size furnace at 95% will give you 95000 btus of heat.

Maximum Input BTU
80,000 BTU
Maximum Heating Output BTU

The amount of heat, rated in British Thermal Units (BTUs), that the unit can deliver into the space. Not sure how many BTUs you need? Try our easy Equipment Sizing Estimator.

Maximum Heating Output BTU
64,000 BTU
Minimum Input BTU

The amount of heat produced by the unit at the lower stage of heat. Having two stages of heat will allow for more consistent operation and greater comfort in the home.

Minimum Input BTU
60,000 BTU
Minimum Output BTU

The amount of heat delivered into the space on the lower stage of heat. This number is the minimum heat input minus the efficiency loss.

Minimum Output BTU
48,000 BTU
Maximum CFM

The maximum amount of air that the blower can push. Rated in Cubic feet per minute or CFM.

Maximum CFM
1,200 @ 0.5
Efficiency (% AFUE)

The percentage of energy converted into output by the unit. The remaining percentage is lost during the conversion process. The higher the efficiency, the lower the operational cost.

Efficiency (% AFUE)
80 %
Blower Type

There are three main type of blowers: Multi-Speed, High-Efficiency Multi-Speed, and Variable Speed.

Standard Multi-Speed blowers have different speed options and you select the speed that the blower will operate at depending on the function it is performing (ex. different speeds for fan, AC, and heating functions).

High-Efficiency Multi-Speed blowers are designed to maintain a constant torque and in doing so will maintain air-flow and use less electricity.

Variable Speed blowers will adjust their speed during operation. The result is a blower that will run at lower speeds for longer periods of time (this improves the air flow and increases electrical efficiency).

Blower Type
Multi-Speed
Burner Stages

A single stage furnace has one heat setting. The furnace is either on at full capacity or it is off.

A two stage furnace has two different heat settings; one full capacity and a second lower heat setting. The advantage of a two stage furnace is that it extends the run time which does a better job distributing the air in your home. This helps improve your homes comfort level while reducing drafty areas.

A modulating furnace will heat on a low capacity until a call for high heat is sent to the furnace. Once a high heat call is initiated the furnace will slowly increase the burner level and blower speed over time, until reaching full capacity. The advantages are potentially reduced noise and better efficiency in some models. A modulating furnace should provide the best comfort level.

Burner Stages
Two
Maximum Overcurrent Protection (Breaker)

The maximum capacity breaker in the building's circuit panel that can be used on the dedicated electrical line supplying the equipment.

Maximum Overcurrent Protection (Breaker)
15 Amps
Fuel Type
Liquid Propane Convertible / Natural Gas
Vent Connection

The diameter of the vent connection on the furnace.

Vent Connection
4 Inches
Supply Air Opening Size

The dimensions of the opening that the air is discharged through. This is the section where you would attach the supply plenum.

Supply Air Opening Size
16 x 19.625 Inches
Flue Pipe Diameter

This refers to the size of the flue pipe needed, and not necessarily the actual connection size on the furnace. Flue diameter is based on length of run and number of elbows used. Please read the installation instructions carefully to ensure correct diameter flue size for your application.

Flue Pipe Diameter
4 Inches
Product Weight
146 lbs
Shipping Weight
146 lbs
Meets CSA Standards

Canadian Standards Association

Meets CSA Standards
Yes
Meets Canadian OEE Standards

Standards established by Canada's Office of Energy Efficiency.

Meets Canadian OEE Standards
No
California Approved

LoNox feature meets State of California emissions requirements.

California Approved
No
Width
17 1/2 Inches
Depth
28 Inches
Height
33 3/8 Inches
Voltage
120 Volts
Frequency
60 Hz
Voltage Phase
1
Heat Exchanger Warranty
Lifetime
Unit Replacement Warranty
10 Years
Parts Warranty
10 Years

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.