The Goodman GR9T800803BN is a residential natural gas forced air furnace engineered to deliver enhanced comfort performance with 80,000 BTU input capacity and 80% AFUE efficiency. This two-stage furnace operates at a lower heating capacity during mild demand and shifts to full capacity during colder conditions, improving temperature consistency and reducing short cycling.
As an 80% AFUE non-condensing furnace, this unit utilizes traditional combustion design and is intended for venting through a metal flue system in accordance with local building and fuel gas codes.
Designed for upflow or horizontal installation, this model offers flexibility depending on mechanical room layout and duct configuration. It integrates with standard residential HVAC duct systems and compatible thermostat controls.
Professional installation by a licensed HVAC technician is required to ensure proper system sizing, airflow configuration, combustion setup, and code compliance.
Specifications
• Type: Gas Forced Air Furnace
• Input Capacity: 80,000 BTU
• AFUE Efficiency: 80%
• Fuel Type: Natural Gas
• Stage Type: Two-Stage
• Configuration: Upflow / Horizontal
• Venting Type: Non-Condensing (Metal Flue)
• Application: Residential Heating
• Installation: Indoor
Warranty
Goodman furnaces typically include a limited lifetime heat exchanger warranty for registered residential installations and a limited parts warranty. Warranty coverage may vary based on registration and installation by a licensed professional. Warranty details should be confirmed with the manufacturer or authorized distributor.

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