The GR9S920403AN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9S920403AN 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 GR9S920403AN.
Features
This furnace is ideal to heat a smaller house (depending on climate)
40,000 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
Goodman 92% 40,000 BTU Single Stage Gas Furnace - 14" Width - Upflow / Horizontal
Efficient Heating in a Compact Package The Goodman GR9S920403AN delivers 40,000 BTU of input heat with a 92 % AFUE rating, making it a highly efficient choice for heating smaller homes or zones while helping reduce fuel waste and utility costs.
Single‑Stage Simplicity with Reliable Warmth Single‑stage operation provides steady heat output whenever the thermostat calls, offering dependable winter comfort without complex modulation.
Quiet, Efficient Airflow with ECM Blower The 9‑speed ECM blower motor enhances airflow control while using less electricity than traditional PSC motors, resulting in quieter operation and better comfort distribution.
Durable Ignition & Advanced Controls Features like a durable hot‑surface ignitor and self‑diagnostic control board improve reliability and make troubleshooting easier for technicians.
Flexible Installation for Tight Spaces Its 14″ width and multi‑position design let HVAC pros install it as either upflow or horizontal, perfect for attics, closets, or compact mechanical rooms.
Modern Construction & Quiet Cabinet A heavy‑gauge steel cabinet helps reduce air leakage and sound levels, while PVC/plastic venting (standard for 90 %+ furnaces) keeps combustion exhaust efficient and quiet.
Q&A
Q1: What heating capacity and efficiency does this furnace deliver? A: The Goodman GR9S920403AN offers 40,000 BTU input (~36,800 BTU output) with a 92% AFUE efficiency, meaning most fuel is converted into usable heat while reducing energy waste.
Q2: What type of operation and blower motor does it have? A: It features a single‑stage gas valve and a 9‑speed ECM blower motor for consistent heat delivery with improved airflow control and quieter operation.
Q3: What installation orientations are supported? A: This furnace supports both upflow and horizontal installations, making it flexible for attics, closets, crawl spaces, or basements.
Q4: What electrical and fuel specifications are required? A: The unit operates on 115 V single‑phase power, uses natural gas (propane conversion kit available), and requires plastic/PVC venting typical of high‑efficiency furnaces.
Q5: How compact is this furnace? A: It has a 14″ cabinet width, ~34.5″ height, and ~28.75″ depth, ideal for tighter spaces where larger furnaces won’t fit.
Q6: What durability and control features are included? A: It comes with a heavy‑gauge steel cabinet, hot surface igniter, self‑diagnostic control board, and components designed for reliable everyday heating.
Q7: Is this furnace environmentally and installation ready? A: Yes — it’s compliant with modern low‑NOx emissions standards and is compatible with R‑32 refrigerant systems when paired with cooling equipment.
Maintenance Tips
Replace Air Filters Every 1–3 Months – Clean filters ensure proper airflow, protect the blower, and prevent heat exchanger strain.
Inspect Burners & Heat Exchanger Annually – Check for cracks, corrosion, or soot buildup to maintain safe operation and 92% AFUE efficiency. (hvacdirect.com)
Clean Condensate Drain & Pan – Keep the drain system clear to prevent water buildup and microbial growth.
Check Electrical Components & Thermostat – Inspect wiring, limit switches, and thermostat function to ensure reliable single-stage heating.
Maintain Proper Airflow – Keep supply and return vents unobstructed to prevent overheating and maintain efficiency.
Schedule Annual Professional Furnace Service – Technicians should inspect the R32-compatible system, clean internal components, and verify safe, efficient operation.
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