Goodman 40,000 BTU 80% AFUE Single-Stage Gas Furnace Downflow/Horizontal 14" Cabinet R-32

Stay warm all winter without breaking the bank. The Goodman GD9S800403AN is a dependable single-stage downflow furnace built for small homes with closet, alcove, or attic installations. Compact, efficient, and backed by one of the best warranties in the industry — this is reliable heating made simple.

Why You'll Love It:

• Affordable 80% AFUE efficiency — converts 80 cents of every energy dollar into heat
• Compact 14" cabinet — fits in tight spaces where other furnaces won't
• 9-speed ECM blower motor — smarter airflow, quieter operation, lower electric bills
• Downflow/horizontal design — engineered for closet, alcove, and attic installs
• Self-diagnosing control board — alerts your technician to issues fast, reducing service time and cost
• LP convertible — easily field-converted to propane with optional kit
• Metal flue venting — straightforward installation using standard metal duct
• R-32 compatible — future-ready, eco-friendly refrigerant support
• Made in the USA — designed, engineered, and assembled domestically

Specs:

• BTU Input: 40,000 | Output: 32,000
• AFUE: 80%
• Cabinet Width: 14"
• Stages: Single
• Blower Motor: 9-Speed ECM
• Fuel Type: Natural Gas (LP Convertible)
• Installation: Downflow / Horizontal
• Venting: Metal
• Voltage: 115V
• Compatible Cooling: 1-2 Ton R-32 Systems

⚠️ Downflow/Horizontal installation only. For upflow applications, see the GR9S800403AN.

Warranty: 10-year parts + lifetime heat exchanger warranty with online registration within 60 days of installation.