The Goodman GR9T800804CX gas furnace is designed to provide reliable residential heating with advanced airflow control and two-stage operation. This model combines a two-stage gas valve with a nine-speed ECM blower motor to deliver consistent heating performance and improved comfort.
The Goodman 80000 BTU gas furnace provides 80,000 BTU of heating input and approximately 64,000 BTU of heating output at an 80% AFUE rating. Its 21-inch cabinet supports higher airflow requirements while maintaining flexible installation options.
The Goodman 80 AFUE furnace uses a non-condensing design that requires metal flue venting. It converts approximately 80% of fuel energy into usable indoor heat while the remaining combustion gases exit through the vent system.
The Goodman Low NOx furnace is designed to reduce nitrogen oxide emissions and meets California Low NOx requirements for applicable areas.
Goodman GR9T800804CX Overview
The Goodman GR9T800804CX gas furnace features two-stage heating technology that allows the unit to operate at a lower heating level during moderate conditions and increase output when additional heat is required.
A Goodman two-stage gas furnace operates with a lower heating input of approximately 56,000 BTU and increases to 80,000 BTU during high-stage operation. This helps maintain more balanced indoor temperatures compared with single-stage heating systems.
The Goodman 80000 BTU gas furnace includes a nine-speed ECM blower motor, aluminized-steel tubular heat exchanger, silicon nitride igniter, and self-diagnostic control board for dependable operation.
Its 21-inch C cabinet supports upflow and horizontal installation configurations, making it suitable for different residential HVAC layouts.
Key Features of Goodman 80,000 BTU Gas Furnace
The Goodman GR9T800804CX gas furnace combines staged heating, adjustable airflow, and Low NOx operation.
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80,000 BTU maximum heating input
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64,000 BTU heating output
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Two-stage gas valve
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Nine-speed ECM blower motor
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Up to 1,600 CFM airflow capacity
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21-inch cabinet width
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Upflow and horizontal installation options
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Propane conversion capability
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R-32 refrigerant detection controls
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R-410A compatibility when properly configured
The Goodman variable-speed ECM furnace provides smoother airflow adjustment by gradually changing blower speed based on system demand. This helps reduce sudden airflow changes during operation.
The Goodman two-stage gas furnace provides lower heating output during normal conditions and increases capacity when colder temperatures require additional heat.
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 Number
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GR9T800804CX
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Product Type
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Gas Furnace
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Fuel Type
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Natural Gas / LP Convertible
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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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Maximum Airflow
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1,600 CFM
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Configuration
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Upflow / Horizontal
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Vent Type
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Metal Flue
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Refrigerant Compatibility
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R-32 / R-410A Compatible
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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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Height
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33.375 inches
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Width
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21 inches
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Depth
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28 inches
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Weight
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129 lbs
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GR9T800804CX Dimensions & Capacity
The Goodman GR9T800804CX gas furnace uses a 21-inch C-size cabinet designed for higher airflow residential applications.
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Height: 33.375 inches
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Width: 21 inches
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Depth: 28 inches
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Weight: 129 lbs
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Maximum heating input: 80,000 BTU
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Maximum heating output: 64,000 BTU
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Maximum airflow: 1,600 CFM
The larger cabinet allows the Goodman variable-speed ECM furnace to provide improved airflow capacity while maintaining flexible installation options.
Who Should Buy Goodman 80K BTU Gas Furnace?
The Goodman GR9T800804CX gas furnace may suit homeowners who need an 80,000 BTU heating system with two-stage operation and adjustable airflow control.
The Goodman 80000 BTU gas furnace can be suitable for medium-sized homes when the heating requirement matches the unit capacity. Proper furnace sizing should consider insulation, climate, ductwork, and heat-loss calculations.
The Goodman 80 AFUE furnace is designed for properties using conventional metal flue venting instead of high-efficiency condensing furnace vent systems.
The Goodman Low NOx furnace may be a suitable choice for areas requiring reduced NOx emissions. Local regulations should always be checked before selecting equipment.
Buyers planning to buy Goodman GR9T800804CX online should confirm cabinet size, airflow requirements, electrical specifications, and HVAC system compatibility before purchase.
Frequently Asked Questions
Q1. What is the heating capacity of this furnace?
The Goodman GR9T800804CX gas furnace has an 80,000 BTU input capacity and approximately 64,000 BTU heating output.
Q2. How does two-stage heating work?
The Goodman two-stage gas furnace operates at a lower heating stage during moderate demand and increases output when additional heat is required.
Q3. What does the ECM blower motor do?
The Goodman variable-speed ECM furnace adjusts airflow gradually to match heating, cooling, and continuous fan requirements.
Q4. What are the dimensions of this furnace?
The furnace measures 33.375 inches high, 21 inches wide, and 28 inches deep. The unit weighs approximately 129 lbs.
Q5. Is this furnace Low NOx rated?
Yes. The Goodman Low NOx furnace is designed with Low NOx emissions compliance and produces below 40 ng/J NOx emissions.
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