Goodman Two-Stage Upflow/Horizontal 80k BTU Gas Furnace 17.5″ Wide

Description

Product Overview

The Goodman furnace is engineered for high-demand heating applications where reliability, efficiency, and durability are paramount. Featuring a patented TuffTube dual-diameter tubular heat exchanger, the unit maximizes heat transfer while minimizing fouling, extending service life and maintaining consistent output across a wide range of operating conditions. The furnace delivers a robust 80,000 BTU output and achieves an 80% Annual Fuel Utilization Efficiency (AFUE), positioning it among the most energy-conscious solutions for laboratory and industrial environments. Its multi-speed blower motor provides precise airflow control, allowing technicians to fine‑tune ventilation rates for optimal comfort and energy savings. Constructed with a polished finish and heavy‑gauge steel housing, the furnace meets rigorous safety standards and is built to withstand the rigors of continuous operation. Package dimensions measure 48 x 48 x 48 inches, and the unit weighs approximately 120 pounds, making it a substantial yet manageable component for professional installers. The model GR9T800803BN, also referenced as GMH80803BN, is compatible with both upflow and horizontal duct configurations, offering flexibility in system design and installation. With a proven track record reflected in a 4.2‑star rating from 40 customer reviews, this furnace has earned a reputation for dependable performance and ease of maintenance.

Usage

Designed for a broad spectrum of heating scenarios, the Goodman furnace excels in environments that demand precise temperature control and rapid response to load changes. In research laboratories, where temperature stability can affect experimental outcomes, the furnace’s two‑stage gas valve and variable‑speed blower ensure that heat is delivered evenly and can be adjusted quickly to meet fluctuating requirements. Industrial facilities such as manufacturing plants, warehouses, and processing centers benefit from the furnace’s ability to maintain large spaces at comfortable temperatures while operating efficiently under continuous load. The unit’s upflow and horizontal installation options allow it to be integrated into existing HVAC infrastructures with minimal disruption, making it suitable for retrofits as well as new construction projects. Its compact 17.5‑inch width enables installation in confined mechanical rooms, and the robust construction tolerates the vibrations and temperature extremes typical of industrial settings. The furnace is also well‑suited for educational institutions, where it can provide reliable heating for classrooms, workshops, and campus facilities, supporting a comfortable learning environment while keeping operating costs low.

Why Choose Us

Choosing the Goodman furnace means selecting a product backed by decades of engineering expertise and a commitment to quality that is reflected in every component. The TuffTube heat exchanger, a patented technology exclusive to Goodman, offers superior durability and heat transfer efficiency compared with conventional designs, reducing the frequency of maintenance interventions and extending the service interval. Our multi‑speed blower system provides granular control over airflow, which translates into lower energy consumption and quieter operation—critical factors for environments where noise levels must be minimized. Each furnace undergoes rigorous factory testing, including performance verification, safety compliance, and durability assessments, ensuring that the unit meets or exceeds industry standards before it reaches the customer. In addition, Goodman provides comprehensive technical support, detailed installation manuals, and a network of certified service professionals who can assist with commissioning, troubleshooting, and routine servicing. The warranty coverage includes a 10‑year limited parts guarantee, reflecting confidence in the product’s long‑term reliability. By investing in this furnace, customers gain a solution that not only delivers immediate performance benefits but also offers peace of mind through robust after‑sales service and a proven track record of operational excellence.

Key Features

• Patented TuffTube dual‑diameter heat exchanger provides superior heat transfer and long‑lasting durability.
• Two‑stage gas valve with convertible technology allows easy activation of dual‑stage operation via a simple dip‑switch.
• Multi‑speed blower delivers precise airflow control, enhancing comfort while reducing energy usage.
• Upflow and horizontal installation flexibility fits a variety of duct configurations and space constraints.
• Comprehensive warranty and dedicated technical support ensure reliable performance and hassle‑free service.

FAQ

What is the difference between the two stages of operation?

The first stage runs at a lower heating output, providing gentle temperature increases and improved efficiency during mild weather. The second stage engages when higher heating demand is detected, delivering full‑capacity output to quickly raise the ambient temperature. This dual‑stage approach balances comfort and energy savings.

Can the furnace be installed in a horizontal configuration?

Yes, the Goodman model GR9T800803BN is designed for both upflow and horizontal installations. The flexible duct connections and internal airflow pathways allow the unit to operate efficiently in either orientation, giving installers the freedom to choose the layout that best fits the building’s mechanical space.

How does the TuffTube heat exchanger improve performance?

The TuffTube design uses a dual‑diameter tubular construction that maximizes surface area for heat exchange while resisting corrosion and fouling. This results in higher thermal efficiency, more consistent heat output, and a longer service life compared with traditional finned heat exchangers.

What maintenance is required to keep the furnace operating optimally?

Regular maintenance includes checking and cleaning the blower motor, inspecting the heat exchanger for signs of wear, verifying gas pressure settings, and ensuring that all electrical connections are secure. Goodman recommends a professional inspection at least once a year to maintain peak efficiency and safety.

Is a warranty included with the furnace?

Yes, the furnace comes with a 10‑year limited parts warranty, covering major components such as the heat exchanger, blower motor, and gas valve. Additional coverage options are available through authorized dealers for extended protection and service plans.