Goodman 80,000 BTU 80% AFUE Downflow Single-Stage Natural Gas Furnace – Model GD9S800804BN

The Goodman GD9S800804BN is a residential natural gas forced air furnace engineered for dependable heating performance with 80,000 BTU input capacity and 80% AFUE efficiency. This single-stage furnace delivers consistent heating output for properly sized residential applications.

This model features a downflow configuration, designed for installations where ductwork is located below the furnace, such as in attic or elevated platform applications. It is specifically built for vertical downflow airflow and is not interchangeable with upflow models without proper design considerations.

As an 80% AFUE non-condensing furnace, this unit utilizes traditional combustion technology and vents through a metal flue system in accordance with local building and fuel gas codes.

Professional installation by a licensed HVAC technician is required to ensure proper system sizing, airflow configuration, venting setup, and code compliance.

Specifications

• Type: Gas Forced Air Furnace
• Input Capacity: 80,000 BTU
• AFUE Efficiency: 80%
• Fuel Type: Natural Gas
• Stage Type: Single-Stage
• Configuration: Downflow
• Venting Type: Non-Condensing (Metal Flue)
• Application: Residential Heating
• Installation: Indoor

Warranty

Goodman gas furnaces typically include a limited lifetime heat exchanger warranty for registered residential installations and a limited parts warranty. Warranty coverage may vary based on product registration and installation by a licensed professional. Warranty details should be confirmed with the manufacturer or authorized distributor.