

Goodman GD9T80 Review
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AFUE:Up to 80%
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ENERGY STAR ®:No
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Burner Type:Dual-Stage
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Blower Type:Multi Speed ECM Motor
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Warranty Score:
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Overall Grade:
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Price:$4,000 - $4,600
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BTU Output:36,800 to 110,400
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Warranty Grade: It can be difficult to know which brands and models offer the best warranty coverage, particularly because a lot of the key details are hidden in dense warranty documents filled with hard to understand legalese. Thankfully for you, we’ve carefully studied them and created this grading system to account for things like the length AND quality of their guarantee, coverage restrictions and more!
Overall Grade: This grade weighs key factors like efficiency, ENERGY STAR certification, comfort, noise level (for A/Cs), our warranty grade, and more.
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Limited inventory: Please note, this model has been marked as having limited inventory by the manufacturer, although it may still be available for purchase through distributors and contractors for some time.
Goodman Brand Overall Rating & Average Price
The Goodman GD9T80 is a reliable and cost-effective gas furnace designed for homeowners looking for consistent heating, quiet operation, and energy efficiency. With an 80% AFUE rating, this model provides dependable warmth while keeping operating costs in check.
This review will cover the features, performance, benefits, and warranty of the Goodman GD9T80 to help you decide if it’s the right furnace for your home.
Goodman GD9T80 Overview
AFUE Rating: 80%
Burner Type: Two-stage
Blower Type: Multi-speed ECM
Heating Capacity: 40,000 - 67,000 BTUs
ENERGY STAR Certified: No
Key Features
- Two-stage gas valve for improved efficiency and comfort
- Efficient and quiet multi-speed ECM circulator motor for smooth airflow
- SureStart® Silicon Nitride igniter for long-lasting durability
- Self-diagnostic control board for easy maintenance and troubleshooting
- Low constant fan speed to maintain consistent air circulation throughout the home
Performance and Efficiency
The 80% AFUE rating means that 80% of the fuel is converted into heat, with the remaining 20% lost through the venting system. While not as high as 90%+ AFUE models, it still provides cost-effective heating for regions with milder winters.
The two-stage gas valve allows the furnace to operate at a lower heating stage for most of the time, reducing energy consumption while keeping your home comfortable. The multi-speed ECM blower motor adjusts airflow to enhance efficiency and maintain consistent temperatures.
Benefits of the Goodman GD9T80
- Reliable and durable – High-quality construction ensures long-lasting performance
- Energy-efficient heating – Two-stage gas valve optimizes fuel usage
- Quiet operation – The multi-speed ECM blower minimizes noise levels
- Long igniter lifespan – The SureStart® Silicon Nitride igniter is built for durability
- Compatible with electronic air cleaners and humidifiers – Enhances indoor air quality
- Self-diagnostic control board – Stores error codes for easy troubleshooting
- Lower operating costs – Provides economical heating compared to older models
- Constant fan speed for better air circulation – Helps distribute heat evenly throughout the home
Warranty and Coverage
Goodman provides strong warranty protection for the GD9T80, giving homeowners peace of mind. The coverage includes:
- 10-year parts warranty
- Lifetime heat exchanger warranty
To take full advantage of the warranty, the furnace must be installed by a licensed HVAC professional, and the homeowner must register the unit within 60 days of installation.
Final Thoughts
The Goodman GD9T80 is a solid choice for homeowners looking for reliable heating at an affordable price. Its two-stage gas valve, multi-speed ECM blower, and SureStart® Silicon Nitride igniter make it a durable, energy-efficient, and quiet furnace.
While its 80% AFUE rating is lower than high-efficiency models, it’s still an economical option for areas with moderate winter temperatures. If you need a dependable and quiet furnace that provides steady warmth and good airflow, the Goodman GD9T80 is worth considering!