Goodman 40,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace Downflow/Horizontal 17.5" Cabinet R-32

Goodman's best downflow furnace technology in a compact package — the highest efficiency and most advanced blower available in a downflow configuration. The Goodman GDVT960403BN delivers 40,000 BTU of two-stage heating at 96% AFUE in a 17.5" downflow cabinet with a true variable-speed ECM blower that automatically and continuously adjusts airflow to your home's exact demand. Purpose-built for closet, alcove, and attic installations where air flows downward — with every smart feature Goodman offers including ComfortBridge™ communicating technology, CoolCloud™ Bluetooth diagnostics, Auto-Comfort mode, and enhanced dehumidification. No other Goodman downflow furnace at this BTU range delivers this level of performance.

Why You'll Love It:

• 96% AFUE efficiency — converts 96 cents of every energy dollar into heat, the highest efficiency rating available in the Goodman downflow furnace lineup — a significant upgrade over 80% and 92% models
• 40,000 BTU input / 38,400 BTU output — ideal heating output for small homes without oversizing or wasted capacity
• True variable-speed ECM blower — unlike standard 9-speed ECM motors, this blower continuously and intelligently adjusts airflow to match exact heating and cooling demand for maximum comfort, minimum noise, and lower electricity costs
• Two-stage gas valve — runs at lower output on mild days for gentler, quieter cycling and more even room temperatures, then ramps to full power when temperatures really drop
• Auto-Comfort mode — automatically optimizes airflow and temperature balance for whole-home comfort without manual adjustments
• Enhanced dehumidification mode — actively manages indoor humidity levels during cooling season for greater year-round comfort
• ComfortBridge™ communicating technology — enables smarter system communication between components for optimized whole-home comfort and efficiency
• CoolCloud™ Bluetooth app — allows contractors to commission, diagnose, and service the unit directly from a smartphone or tablet without removing the cabinet panels
• Downflow / horizontal installation — purpose-built for closets, alcoves, and attic installs where air needs to travel downward through the duct system
• 17.5" cabinet width — compatible with 1-2 ton R-32 cooling systems for a complete, balanced home comfort setup
• Certified for direct vent (2-pipe) or non-direct vent (1-pipe) — flexible venting configurations for easier installation in a variety of applications
• Left or right gas and electrical connections — convenient field flexibility for faster, easier installation
• 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
• Heavy-gauge steel cabinet with less than 2% air leakage — airtight construction minimizes heat loss and reduces sound output for quieter, more economical operation
• 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 with constant memory — stores the last fault codes so your technician can diagnose issues fast, cutting service time and costs
• Compatible with electronic air cleaners and humidifiers — wire directly to the low-voltage terminals on the control board for seamless indoor air quality integration
• 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 domestical

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

Specs:

• Input: 40,000 BTU | Output: 38,400 BTU
• AFUE: 96%
• Cabinet Width: 17.5"
• Stages: Two
• Blower Motor: True Variable Speed ECM
• Fuel Type: Natural Gas (LP Convertible)
• Installation: Downflow / Horizontal
• Venting: PVC / Plastic — Single or Dual Pipe
• Voltage: 115V
• Compatible Cooling: 1-2 Ton R-32 Systems

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