Goodman - 100,000 BTU 92% Gas Furnace - 21" Width - Upflow / Horizontal - Single Stage - 115V - R32 - GR9S921004CN

Goodman - 100,000 BTU 92% Gas Furnace - 21" Width - Upflow / Horizontal - Single Stage - 115V - R32 - GR9S921004CN

The GR9S921004CN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9S921004CN 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 GR9S921004CN.

Features

• This furnace is ideal to heat a medium to large house (depending on climate)
• 100,000 BTU 92% efficient natural gas furnace
• Requires plastic/PVC flue venting
• Complies with Clean Air Act New Refrigerant Requirements
• 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

• Right‑Sized for 2.5‑Ton HVAC: Engineered for 30,000 BTU capacity, this evaporator coil pairs perfectly with 2.5‑ton split systems for homes and residential installations.

• Factory‑Installed TXV for Efficiency: Thermal expansion valve (TXV) delivers precise refrigerant control, improving cooling efficiency and consistent performance.

• R‑32 Refrigerant Optimized: Designed specifically for R‑32 systems, offering better heat transfer and lower environmental impact compared to older refrigerants.

• 21″ Horizontal Configuration: Horizontal, 21‑inch cabinet height fits tight mechanical spaces like attics, crawlspaces, or closets.

• Durable Aluminum Coil Design: Aluminum tube‑and‑fin construction resists corrosion and supports reliable heat exchange over time.

• Moisture & Rust Protection: Foil‑faced insulation and corrosion‑resistant drain pan help manage moisture and extend system longevity.

• Service‑Friendly Access: Front‑accessible panels and standardized connections make installation and future maintenance easier.

Q&A

Q: What is the heating capacity and efficiency of this furnace?
A: This unit delivers **100,000 BTU input heat with up to 92% AFUE, meaning up to 92% of fuel is converted to usable heat — ideal for medium to larger homes needing efficient heating.

Q: What type of operation and burner does it have?
A: It features a single‑stage gas valve, providing consistent, reliable heating performance.

Q: What blower motor is included?
A: The furnace uses a multi‑speed ECM blower motor for improved airflow control, quieter operation, and better electrical efficiency.

Q: What installation orientations are supported?
A: Designed for upflow or horizontal (left/right) installation, giving flexibility for basements, closets, or attic spaces.

Q: What are the electrical and venting requirements?
A: Operates on 115 V single‑phase, 60 Hz electrical service and requires plastic/PVC flue venting for high‑efficiency operation.

Q: What materials and durability features are included?
A: Built with a heavy‑gauge steel cabinet, aluminized steel heat exchanger, and durable silicon nitride igniter for long‑lasting performance.

Q: Can this furnace run on propane?
A: Factory configured for natural gas but can be converted to propane (LP) with an optional conversion kit.

Q: What are the physical dimensions?
A: Approximate dimensions are 34.5″ H × 21″ W × 28.75″ D, suited to standard residential HVAC spaces.

Maintenance Tips

• Replace or clean air filters every 1–3 months to maintain airflow and prevent dust buildup on the heat exchanger and blower.

• Inspect the heat exchanger annually for cracks or corrosion to ensure safe and efficient operation.

• Clean burners, pilot assembly, and ignition system for reliable combustion and consistent heating.

• Check the blower motor and fan assembly for dust, debris, and proper lubrication.

• Inspect venting and flue pipe to ensure there are no obstructions or leaks in the exhaust system.

• Test gas valve and thermostat operation for accurate temperature control and safe operation.

• Verify 115V electrical connections and inspect wiring for wear or damage.

• Keep the surrounding area clear to maintain airflow and reduce fire hazards.

• Schedule annual professional HVAC service for full inspection, cleaning, and safety checks.

• Register your furnace to activate warranty coverage and maintain service records.