| Square Footage | Furnace BTU |
|---|---|
| 1,000-1,200 sq. ft. Home | 40,000 - 60,000 BTU |
| 1,200-1,500 sq. ft. Home | 60,000 BTU |
| 1,500-1,800 sq. ft. Home | 60,000 - 80,000 BTU |
| 1,800-2,500 sq. ft. Home | 80,000 - 100,000 BTU |
| 2,500-3,500 sq. ft. Home | 100,000 to 120,000 BTU |
Please note: The Goodman GR9T80 furnace has been marked as limited inventory by the manufacturer. However, it may still be available through select distributors and contractors for a limited time.
The Goodman GR9T80 is a two-stage gas furnace designed to deliver dependable, quiet, and energy-efficient heating performance. With an 80% AFUE (Annual Fuel Utilization Efficiency) rating, this model strikes an excellent balance between performance and affordability — making it a smart choice for homeowners in regions with moderate winter conditions.
This review covers the furnace’s key features, performance, benefits, and warranty coverage to help you determine if the Goodman GR9T80 is the right fit for your home.
AFUE Rating: 80%
Burner Type: Two-stage
Blower Type: Multi-speed ECM motor
Heating Capacity: 40,000 – 67,000 BTUs
ENERGY STAR® Certified: No
Two-stage gas valve for improved efficiency and consistent comfort
Multi-speed ECM blower motor ensures even airflow and quieter operation
SureStart® Silicon Nitride igniter offers long-lasting durability
Self-diagnostic control board simplifies maintenance and troubleshooting
Low constant fan mode provides continuous, gentle air circulation
Compatible with EACs and humidifiers to enhance indoor air quality
With an 80% AFUE, the Goodman GR9T80 converts 80% of the fuel it uses into heat for your home, making it a cost-effective and reliable heating option.
Its two-stage gas valve allows the furnace to run at a lower capacity most of the time, maintaining stable indoor temperatures and minimizing energy waste. When demand increases, it automatically switches to full capacity for added warmth.
The multi-speed ECM blower motor further enhances comfort and efficiency, providing smooth, quiet airflow that keeps your living spaces evenly heated.
Durable and reliable construction for long-term performance
Two-stage heating minimizes temperature swings for consistent comfort
Energy-efficient design reduces overall fuel consumption
Quiet operation thanks to the ECM blower and variable gas valve
Long-lasting igniter ensures dependable startups over time
Easy diagnostics via built-in control board
Supports air cleaners and humidifiers to improve air quality
Flexible thermostat compatibility (works with single-stage or two-stage models)
Lower operating costs for budget-conscious homeowners
Goodman backs the GR9T80 with one of the strongest warranties in its class:
10-Year Limited Parts Warranty
Lifetime Heat Exchanger Warranty
To ensure full warranty coverage, the furnace must be installed by a certified HVAC technician and registered within 60 days of installation.
The Goodman GR9T80 offers a reliable, quiet, and energy-efficient heating solution at a great price point. Its two-stage operation, ECM blower motor, and robust warranty make it an excellent option for homeowners seeking comfort and long-term reliability without the higher cost of premium high-efficiency models.
If you live in a region with moderate winters and want a dependable, budget-friendly furnace, the Goodman GR9T80 is a solid choice that delivers performance, comfort, and peace of mind.
