Goodman - 80,000 BTU 80% Gas Furnace - 21" Width - Upflow / Horizontal - Single Stage - 1 - GR9S800804CN15V - R32

Goodman - 80,000 BTU 80% Gas Furnace - 21" Width - Upflow / Horizontal - Single Stage - 1 - GR9S800804CN15V - R32

The GR9S800804CN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9S800804CN single-stage, 9-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. If you're looking to cut your energy bills and improve your comfort without breaking the bank, your search stops with the Goodman GR9S800804CN.

Features

• This furnace is ideal to heat a medium-sized house (depending on climate)
• 80,000 BTU 80% efficient natural gas furnace
• Requires metal flue venting
• Can be used in the upflow or horizontal orientation
• Can be converted to an LP furnace with a conversion kit (sold separately)
• Innovative design for electrical efficiency, safety, and lower sound output
  

Specifications

Manual

• Installation Manual
• Specifications Sheet
  

What our Experts Think

• Reliable Heating: 80,000 BTU output efficiently warms small to medium homes.

• Energy Conscious: 80% AFUE provides solid efficiency while keeping costs reasonable.

• Flexible Installation: 21" width supports upflow or horizontal configurations.

• Consistent Performance: Single-stage operation delivers steady, dependable heat.

• Standard Integration: 115V power supply compatible with most residential systems.

• Durable Build: Engineered for long-term reliability in varied climates.

• Quiet Operation: Designed for minimal operational noise during heating cycles.

Q&A

Q: What size home is this furnace best for?
A: With 80,000 BTU input and an 80% AFUE rating, this furnace is ideal for medium‑sized homes or residential heating applications. It converts about 80 % of fuel into heat.

Q: How efficient is this model?
A: It has an 80 % AFUE efficiency, meaning most of the energy from fuel is turned into usable heat, helping lower heating costs compared with older low‑efficiency furnaces.

Q: What installation orientations are supported?
A: Designed for Upflow and Horizontal installs, offering flexible placement in attics, basements, or closets.

Q: What does “single stage” mean?
A: A single‑stage gas valve runs at full capacity whenever heat is needed, providing simple, reliable heating performance.

Q: What blower motor does it use?
A: It features a multi‑speed ECM blower motor for smoother airflow, quieter operation, and better efficiency than basic motors.

Q: What fuel and venting does this furnace require?
A: It runs on natural gas and is convertible to LP (propane) with an optional kit. Standard metal flue venting is required for safe exhaust.

Q: What are the electrical requirements?
A: Operates on 115 V, single‑phase power, typical for residential furnaces.

Q: What additional comfort or convenience features are included?
A: Includes a self‑diagnostic control board, hot‑surface igniter, and color‑coded terminals for easier installation and service.

Q: Is this model environmentally compliant?
A: The furnace is R‑32 compatible, aligning with newer refrigerant standards and environmental requirements.

Maintenance Tips

• Replace air filters every 1–3 months to maintain airflow and efficiency.

• Keep supply and return vents clear to ensure proper heating performance.

• Maintain 2–3 feet of clearance around the furnace for safe operation and proper ventilation.

• Inspect the condensate drain line periodically to prevent clogs and water damage.

• Check thermostat settings and operation for consistent temperature control.

• Examine vent pipes and connections for leaks or blockages.

• Listen for unusual noises such as rattling, buzzing, or hissing indicating potential issues.

• Clean blower compartment and internal surfaces to prevent dust buildup.

• Test carbon monoxide detectors to ensure safe operation.

• Schedule annual professional maintenance to inspect burners, heat exchanger, gas connections, and safety controls.