Goodman - 100,000 BTU 80% Variable Speed Gas Furnace - 21" Width - Upflow / Horizontal - Two Stage - 115V - R32 - GRVT801005CN

Goodman - 100,000 BTU 80% Variable Speed Gas Furnace - 21" Width - Upflow / Horizontal - Two Stage - 115V - R32 - GRVT801005CN

The GRVT801005CN gas furnace is from one of the top-of-the-line series by Goodman. Considered one of the best of the best, this furnace has a two stage burner and a variable speed blower motor. With the best durability and reliability that Goodman 80% efficient furnaces have to offer, we are proud to offer you the Goodman GRVT801005CN gas furnace

Features

• This furnace is ideal to heat a small to medium house (in average climate conditions)
• 100,000 BTU 80% AFUE two stage variable speed natural gas furnace
• Requires metal flue venting
• Can be used in the upflow or horizontal orientation
• Can be converted to propane with an LP conversion kit (sold separately)
• Innovative design for electrical efficiency, safety, and lower sound output
  

Specifications

Manual

• Installation Manual
• Specifications Sheet
  

What our Experts Think

• 100,000 BTU Heating Power
  Ideal for medium to large homes, delivering consistent warmth even during colder winter conditions.

• Two-Stage Gas Valve for Comfort
  Runs on low stage most of the time, increasing efficiency, reducing temperature swings, and improving overall comfort.

• Variable Speed ECM Blower Motor
  Automatically adjusts airflow for quieter operation, improved humidity control, and better energy efficiency.

• 80% AFUE Efficiency Rating
  A dependable standard-efficiency furnace that balances heating performance with lower installation costs compared to high-efficiency venting systems.

• Compact 21" Cabinet Design
  The space-saving width makes installation easier in tighter utility rooms, closets, or basements.

• Flexible Installation
  Supports Upflow or Horizontal configurations, making it adaptable to a wide range of HVAC system layouts.

• Modern Refrigerant Compatibility (R32 Systems)
  Designed to work alongside newer HVAC systems using R32 refrigerant, helping future-proof your heating setup.

Q&A

Q: What size home can the Goodman 100,000 BTU furnace heat?
A: This 100,000 BTU gas furnace is ideal for medium to large homes, typically heating spaces around 2,000–3,000 sq. ft., depending on insulation, climate, and home layout.

Q: What does 80% AFUE efficiency mean?
A: An 80% AFUE rating means 80% of the fuel is converted into usable heat, while only 20% is lost through exhaust, providing reliable and cost-effective heating.

Q: What are the benefits of the two-stage heating system?
A: The two-stage gas valve runs on a lower setting most of the time for quieter operation, better temperature control, and improved energy efficiency, switching to full power only during colder conditions.

Q: How does the variable speed blower improve comfort?
A: The variable speed ECM blower motor adjusts airflow automatically, delivering more consistent temperatures, quieter performance, and improved indoor air circulation.

Q: Can this furnace be installed in different positions?
A: Yes. This model supports Upflow and Horizontal installation, making it suitable for closets, attics, basements, and utility spaces.

Q: What is the cabinet width of this furnace?
A: The unit has a 21-inch cabinet width, designed to fit many standard residential HVAC installations.

Q: What electrical requirements does this furnace have?
A: The Goodman GRVT801005CN operates on 115V standard household power, simplifying installation in most homes.

Q: Is this furnace compatible with modern HVAC systems?
A: Yes. It works well with central air conditioning systems, smart thermostats, and indoor air quality accessories when properly installed by an HVAC professional.

Q: What type of refrigerant is used with this system?
A: This system is designed for compatibility with R32 refrigerant, a more environmentally friendly option with lower global warming potential compared to older refrigerants.

Maintenance Tips

• Replace or Clean Air Filters Regularly: Check the furnace filter every 1–3 months. A clean filter improves airflow, efficiency, and indoor air quality while preventing strain on the variable-speed blower motor.

• Keep Vents and Registers Clear: Ensure all supply and return vents remain unobstructed by furniture, rugs, or dust buildup to maintain balanced airflow and optimal heating performance.

• Schedule Annual Professional Tune-Ups: Have an HVAC technician inspect the burners, heat exchanger, gas pressure, ignition system, and two-stage operation at least once per year to ensure safe and efficient performance.

• Inspect the Venting System: Periodically check flue pipes and exhaust vents for blockages, corrosion, or loose connections to ensure proper combustion gas ventilation.

• Maintain the Surrounding Area: Keep the area around the furnace clean and free of debris, boxes, or flammable materials to support safe airflow and service access.

• Check Thermostat Performance: Verify thermostat settings and calibration so the furnace’s variable-speed blower and two-stage heating operate efficiently.

• Monitor Unusual Sounds or Odors: If you notice unusual noises, gas smells, or inconsistent heating, shut off the system and contact a qualified HVAC professional immediately.