Goodman - 80,000 BTU 80% Gas Furnace - 17.5" Width - Upflow / Horizontal - Two Stage - 115V - R32 - GR9T800804BN

Goodman - 80,000 BTU 80% Gas Furnace - 17.5" Width - Upflow / Horizontal - Two Stage - 115V - R32 - GR9T800804BN

The GR9T800804BN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9T800804BN two-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 GR9T800804BN.

Features

• This furnace is ideal to heat a medium-sized house (depending on climate)
• 80,000 BTU 80% efficient natural gas furnace
• Requires metal flue venting
• 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

Manual

• Installation Manual
• Specifications Sheet
  

What our Experts Think

• Strong 80,000 BTU Output: Offers 80 k BTU with 80 % AFUE, delivering consistent, reliable heat for small to medium‑sized homes.

• Two‑Stage Comfort Control: Two‑stage gas valve provides smoother temperature transitions and quieter operation compared to single‑stage units.

• Flexible Orientation: Supports upflow or horizontal installation, ideal for basements, closets, crawlspaces, or attics with limited vertical space.

• Compact 17.5″ Width: Narrow cabinet design fits well in tight mechanical areas without sacrificing performance.

• Standard 115 V Power: Runs on common 115‑volt electrical service, making installation and wiring straightforward.

• Durable Construction: Built with a heavy‑gauge insulated cabinet for enhanced durability and quieter operation.

• Service‑Ready Design: Accessible panels and familiar internal layout simplify HVAC technician maintenance.

• Modern R‑32 Compatibility: Designed for systems using R‑32 refrigerant, ensuring modern compliance and future readiness.

Q&A

Q: What is the heating capacity and efficiency of this Goodman furnace?
A: The Goodman GR9T800804BN delivers 80,000 BTU input heat with 80% AFUE efficiency, meaning it converts 80% of fuel into usable heat for reliable comfort.

Q: What type of gas valve and stages does it include?
A: This model uses a two‑stage gas valve, offering smoother temperature control and more consistent heating than single‑stage units.

Q: What blower motor and airflow does it use?
A: It features a multi‑speed ECM blower motor capable of up to ≈1600 CFM, improving airflow efficiency and quieter operation.

Q: What installation orientations does it support?
A: Designed for upflow or horizontal (left/right) installation, providing flexibility in basements, attics, or closets.

Q: What are the electrical and fuel details?
A: Operates on 115 V single‑phase 60 Hz power and supports natural gas fuel, with optional propane conversion where applicable.

Q: What venting requirements are there?
A: As an 80% AFUE furnace, it uses metal flue venting for safe combustion exhaust.

Q: What are the physical dimensions?
A: The cabinet measures approximately 17.5″ W × 28″ D × 33.38″ H, fitting standard residential HVAC spaces.

Q: What durability and performance features are included?
A: Includes a heavy‑gauge steel cabinet, hot‑surface igniter, self‑diagnostic control board, and color‑coded low‑voltage terminals for reliable performance and easier service.

Maintenance Tips