Goodman - 100,000 BTU 80% Gas Furnace - 21" Width - Downflow / Horizontal - Single Stage - 115V - R32 - GD9S801005CN

Goodman - 100,000 BTU 80% Gas Furnace - 21" Width - Downflow / Horizontal - Single Stage - 115V - R32 - GD9S801005CN

The GD9S801005CN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GD9S801005CN single-stage, multi-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 GD9S801005CN.

Features

• This furnace is ideal to heat a medium to large house (depending on climate)
• 100,000 BTU 80% efficient natural gas furnace
• Self-diagnostic control board
• Can be used in the downflow or horizontal (left or right) 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

• Solid Everyday Heating: The Goodman GD9S801005CN Gas Furnace delivers 100,000 BTU with 80% AFUE, providing dependable warmth and steady performance for medium to larger homes.

• Simple Single‑Stage Operation: The single‑stage design offers consistent heat output, making it easy to install, service, and maintain with fewer moving parts.

• Downflow & Horizontal Ready: Designed for downflow or horizontal installations, this furnace fits attics, basements, or tight mechanical spaces where upflow units won’t work.

• Robust Construction: Built with quality Goodman components and a durable heat exchanger, engineered for long‑term reliability.

• Budget‑Friendly Choice: A cost‑effective heating solution that balances performance and value, ideal for homeowners seeking straightforward, reliable comfort.

Q&A

Q: What heating capacity does this furnace deliver?
A: The Goodman GD9S801005CN has a 100,000 BTU input (~80,000 BTU output), suitable for medium to large homes when sized appropriately.

Q: What does the 80% AFUE rating mean?
A: 80% AFUE means about 80 ¢ of every dollar spent on fuel becomes usable heat, offering good standard efficiency for dependable home heating.

Q: Is this a single‑stage or variable furnace?
A: It’s a single‑stage gas furnace — the burner operates at full capacity when heating is needed for simple, reliable performance.

Q: What blower motor does it use?
A: Equipped with a 9‑speed multi‑speed ECM blower motor for better airflow control, quieter operation, and improved comfort compared to basic motors.

Q: What installation orientations are supported?
A: Designed for downflow and horizontal installation, giving flexibility for attics, basements, or horizontal duct layouts.

Q: What power does it require?
A: Runs on 115 V single‑phase power, typical for residential furnaces.

Q: Does it use modern refrigerants?
A: Yes — it’s compatible with R32 refrigerant components, making it suitable for modern HVAC splits.

Maintenance Tips

• Replace Air Filters Monthly: Use quality filters every 1–3 months to maintain airflow and protect the blower motor.

• Keep Vents & Registers Clear: Ensure supply and return vents are unobstructed for even heating.

• Inspect Venting System: Check intake and exhaust pipes for blockages, debris, or damage to ensure safe operation.

• Clean Around the Furnace: Maintain 2–3 ft clearance to prevent dust buildup and allow proper airflow.

• Monitor Blower Operation: Single-stage blowers should run steadily and quietly; unusual sounds may indicate maintenance needs.

• Check Thermostat & Power Supply: Verify thermostat settings, gas supply, and 115V circuit are functioning correctly.

• Schedule Annual Professional Service: A licensed HVAC technician should inspect burners, heat exchanger, gas pressure, ignition system, and safety controls yearly.