Goodman 80,000 BTU 97% AFUE Modulating Variable Speed Gas Furnace Downflow/Horizontal 17.5" Cabinet R-32

The most powerful 97% AFUE modulating downflow furnace in the 17.5" cabinet — built for mid-size homes that demand the absolute best. The Goodman GDVM970803BN steps up to 80,000 BTU of modulating heating at 97% AFUE in a slim 17.5" downflow cabinet — the highest BTU available in this cabinet width within the GDVM97 lineup. Purpose-built for closet, alcove, and attic installations in mid-size homes where space is limited but maximum efficiency and modulating precision are non-negotiable. Run almost silently at minimum output on mild days — then step up incrementally to exactly the power needed when temperatures really drop.

Why You'll Love It:

• 97% AFUE efficiency — converts 97 cents of every energy dollar into heat, the highest efficiency rating available in the entire Goodman downflow furnace lineup — a significant upgrade over 80%, 92%, and 96% models
• 80,000 BTU input / 77,600 BTU output — powerful, consistent heating for mid-size homes — the most powerful unit in the GDVM97 17.5" cabinet lineup
• Self-calibrating modulating gas valve — infinitely adjusts output between 40% and 100% to precisely maintain your exact set temperature with virtually no swings or cycling — far more precise than two-stage operation
• True variable-speed ECM blower at 1,200 CFM — continuously and intelligently ramps airflow up or down to match exact heating demand for whisper-quiet operation and lower electricity costs
• Energy Star certified — independently verified to meet strict energy efficiency guidelines set by the US EPA — may qualify for utility rebates in many states
• 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
• Slim 17.5" cabinet — the most powerful modulating downflow furnace in this cabinet width, compatible with 1-3 ton R-32 cooling systems
• 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 sloped secondary heat exchanger — the sloped design improves condensate drainage and heat extraction to achieve the industry-leading 97% 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 and dual 7-segment display — stores fault codes and displays them clearly for fast, accurate troubleshooting
• Compatible with electronic air cleaners and 120V or 24V humidifiers — wire directly to the low-voltage terminals 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
• Complies with California Low NOx 40 ng/J emissions standard — approved for installation in all US states including California
• R-32 compatible — future-ready refrigerant support for pairing with modern R-32 cooling systems
• AHRI Certified, ETL Listed, and Energy Star Qualified — independently verified for safety, performance, and energy efficiency
• Made in the USA — designed, engineered, and assembled domestically

⚠️ PVC/Plastic venting required — this is a 97% AFUE condensing furnace and cannot use metal flue venting.

Specs:

• Input: 80,000 BTU | Output: 77,600 BTU
• AFUE: 97%
• Cabinet Width: 17.5"
• Gas Valve: Self-Calibrating Modulating
• Blower Motor: True Variable Speed ECM
• Blower CFM: 1,200
• Fuel Type: Natural Gas (LP Convertible)
• Installation: Downflow / Horizontal
• Venting: PVC / Plastic — Single or Dual Pipe
• Voltage: 115V
• Compatible Cooling: 1-3 Ton R-32 Systems
• Certifications: AHRI, ETL, Energy Star

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