Goodman 100,000 BTU 96% AFUE Two-Stage Gas Furnace Upflow/Horizontal 21" Cabinet R-32

The ultimate two-stage furnace for large homes with 5-ton cooling systems — maximum power, maximum efficiency, zero compromise. The Goodman GR9T961005CN delivers 100,000 BTU of two-stage heating at 96% AFUE in a wide 21" upflow cabinet specifically sized for 5-ton R-32 cooling systems. If you're building or upgrading a complete whole-home comfort system around a 5-ton condenser or heat pump, this is the furnace that completes it. Run quietly at 60% output on mild days for gentler, more even comfort — then step up to full 100% power when the coldest days of winter arrive.

Why You'll Love It:

• 96% AFUE efficiency — converts 96 cents of every energy dollar into heat, one of the highest efficiency ratings available for a two-stage gas furnace — a significant upgrade over 80% and 92% models
• 100,000 BTU input / 96,000 BTU output — serious heating power built for large homes paired with 5-ton cooling systems, without oversizing or wasted capacity
• Two-stage gas valve — runs at 60% output on mild days for gentler, quieter cycling and more even room temperatures, then ramps to 100% full power when temperatures really drop
• 9-speed ECM blower motor — precise, whisper-quiet airflow specifically matched to 5-ton system airflow requirements, outperforming older PSC motor units and eliminating hot and cold spots throughout your home
• Upflow / horizontal installation — flexible placement in basements, closets, or utility rooms to suit your home's layout
• Wide 21" cabinet — specifically sized for 2-5 ton R-32 cooling systems, making it the natural pairing for whole-home comfort setups built around larger condensers and heat pumps
• Heavy-duty aluminized-steel tubular primary heat exchanger — engineered for long-lasting durability and efficient heat transfer with wrinkle-bend technology for added dependability
• Stainless steel secondary heat exchanger — extracts additional heat from exhaust gases to achieve the industry-leading 96% AFUE efficiency rating
• Silicon nitride igniter — more durable than older hot surface igniters, reducing maintenance calls and replacement costs over the life of the unit
• Self-diagnosing control board — acts like a "check engine light" for your furnace, pinpointing issues fast and cutting service time and costs
• LP convertible — easily field-converted to propane with optional kit, giving you fuel flexibility for your home
• PVC/plastic venting required — high-efficiency condensing operation requires plastic vent pipe, not metal
• Low NOx emissions — meets air quality requirements for nationwide installation
• R-32 compatible — future-ready refrigerant support for pairing with modern R-32 cooling systems
• AHRI Certified and ETL Listed — independently verified for safety and performance
• Made in the USA — designed, engineered, and assembled domestically

⚠️ PVC/Plastic venting required — this is a 96% AFUE condensing furnace and cannot use metal flue venting.

Specs:

• Input: 100,000 BTU | Output: 96,000 BTU
• AFUE: 96%
• Cabinet Width: 21"
• Stages: Two
• Blower Motor: 9-Speed ECM
• Fuel Type: Natural Gas (LP Convertible)
• Installation: Upflow / Horizontal
• Venting: PVC / Plastic
• Voltage: 115V
• Compatible Cooling: 2-5 Ton R-32 Systems

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