Bring consistent warmth to your home with a furnace designed to adjust its heating output according to demand. Its compact cabinet and flexible airflow orientation make it suitable for many residential HVAC systems.
The Goodman GR9T800804BX gas furnace combines two-stage heating with a nine-speed ECM blower motor. This combination helps reduce temperature swings while delivering controlled airflow throughout the home.
With an 80,000 BTU maximum input, the Goodman 80000 BTU gas furnace is designed for homes that require substantial heating capacity during colder weather.
The Goodman Low NOx furnace produces less nitrogen oxide than a standard furnace, making it a practical option for areas with Low NOx equipment requirements.
Goodman GR9T800804BX Overview
The Goodman GR9T800804BX gas furnace provides approximately 64,000 BTU of heating output at its high stage. During milder conditions, it can operate at its lower 56,000 BTU input stage to use less fuel and maintain steadier indoor temperatures.
As an 80% AFUE gas furnace, it converts approximately 80% of the fuel it consumes into usable indoor heat. The remaining combustion gases are directed through an appropriate metal venting system.
The Goodman two-stage furnace normally runs at its lower heating level and switches to full capacity when the home needs additional warmth. This staged operation can provide more even heating than basic single-stage equipment.
The Goodman 80000 BTU gas furnace supports upflow and horizontal configurations. Its 17.5-inch B-width cabinet can also be matched with compatible indoor coils and cooling equipment.
Key Features of Goodman 80K BTU Gas Furnace
The Goodman GR9T800804BX gas furnace includes practical features that support dependable heating, controlled airflow, and straightforward system matching.
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Two-stage gas valve for low- and high-level heating
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Nine-speed ECM blower motor
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80% AFUE efficiency rating
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80,000 BTU maximum heating input
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64,000 BTU maximum heating output
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Upflow and horizontal airflow configurations
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California Low NOx operation below 40 ng/J
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Durable aluminized-steel tubular heat exchanger
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Silicon nitride hot-surface ignition
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Self-diagnostic control board
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R-32 system compatibility
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Heavy-gauge insulated steel cabinet
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Natural gas operation with propane-conversion capability
The Goodman Low NOx furnace is designed to limit nitrogen oxide emissions to below 40 ng/J. It is classified as Low NOx rather than Ultra-Low NOx, so local emissions regulations should be checked before purchase.
A nine-speed ECM blower helps the Goodman two-stage furnace deliver airflow that can be adjusted to suit different heating and cooling requirements.
Technical Specifications
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Specification
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Product Details
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Brand
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Goodman
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Model
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GR9T800804BX
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Equipment Type
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Gas furnace
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Fuel Type
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Natural gas
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Propane Convertible
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Yes, with an appropriate conversion kit
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AFUE Rating
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80%
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Maximum Heating Input
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80,000 BTU
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Maximum Heating Output
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64,000 BTU
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Low-Stage Heating Input
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56,000 BTU
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Low-Stage Heating Output
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45,000 BTU
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Heating Stages
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Two
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Blower Motor
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Nine-speed ECM
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Motor Rating
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3/4 HP
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Nominal Airflow
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1,600 CFM
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Maximum Airflow
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1,708 CFM at 0.5 ESP
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Supported Cooling Capacity
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2.5 to 4 tons
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Airflow Orientation
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Upflow or horizontal
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NOx Classification
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California Low NOx
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Heat Exchanger
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Aluminized-steel tubular design
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Ignition Type
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Silicon nitride hot-surface ignition
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Vent Connection
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4 inches
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Electrical Supply
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115V, single phase, 60 Hz
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Minimum Circuit Ampacity
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11.3 amps
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Maximum Breaker Size
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20 amps
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Cabinet Size
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B cabinet
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Refrigerant Compatibility
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R-32-ready system applications
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Height
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33.375 inches
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Width
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17.5 inches
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Depth
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28 inches
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Weight
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121 lbs
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GR9T800804BX Dimensions & Capacity
The Goodman GR9T800804BX gas furnace measures 33.375 inches high, 17.5 inches wide, and 28 inches deep. It weighs 121 lbs and uses Goodman's B-width cabinet.
The 80% AFUE gas furnace has a maximum input capacity of 80,000 BTU and an estimated maximum output of 64,000 BTU. Its blower supports approximately 2.5- to 4-ton cooling applications, depending on the complete system match.
Who Should Buy Goodman 80K BTU Gas Furnace?
The Goodman GR9T800804BX gas furnace is worth considering for homeowners who need an 80,000 BTU unit with staged heating, flexible airflow orientation, and an efficient ECM blower.
This Goodman 80000 BTU gas furnace may suit medium-to-larger homes, but the correct furnace size depends on the building’s climate, insulation, windows, layout, and calculated heating load.
Homeowners seeking reduced nitrogen oxide emissions may consider the Goodman Low NOx furnace, provided it meets the emissions standards enforced in their location.
The 80% AFUE gas furnace is also suitable for properties equipped for conventional metal-flue venting rather than the PVC venting commonly associated with condensing furnaces.
Frequently Asked Questions
Q1. What is the heating capacity of the GR9T800804BX?
The Goodman GR9T800804BX gas furnace provides 80,000 BTU of maximum input and approximately 64,000 BTU of maximum heating output.
Q2. Does this furnace have more than one heating stage?
Yes. The Goodman two-stage furnace can operate at a lower 56,000 BTU input level before switching to its full 80,000 BTU capacity when greater heating output is needed.
Q3. Is this model classified as Low NOx?
Yes. It is a Goodman Low NOx furnace with nitrogen oxide emissions below 40 ng/J. However, it is not classified as Ultra-Low NOx equipment.
Q4. What airflow configurations does this furnace support?
The furnace supports both upflow and horizontal airflow configurations, giving it flexibility for different equipment layouts.
Q5. What does an 80% AFUE rating mean?
An 80% AFUE gas furnace converts approximately 80% of the fuel it consumes into usable heat over a typical heating season.
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