

Heil G97CTN Review
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AFUE:Up to 97%
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ENERGY STAR ®:Yes
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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:$4,750 - $5,500+
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BTU Output:40,000–120,000
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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.
Heil Brand Overall Rating & Average Price
The Heil Ion™ 97 - G97CTN is a high-efficiency, variable-speed gas furnace designed to deliver exceptional comfort, energy savings, and advanced temperature control. With an impressive 97% AFUE rating, this model ensures that nearly all the fuel used is converted into usable heat, making it an ideal choice for homeowners looking for a premium heating solution.
This review will break down the features, benefits, and overall performance of the Heil Ion™ 97 - G97CTN to help you decide if it’s the right furnace for your home.
Heil Ion™ 97 - G97CTN Overview
✔ AFUE Rating: 97%
✔ Burner Type: Two-stage gas valve
✔ Blower Type: Variable-speed ECM
✔ Wi-Fi Enabled: Yes, with Ion™ Black System Control
✔ ENERGY STAR Certified: Yes
Key Features
- Variable-speed blower motor for superior temperature control and comfort
- Two-stage gas valve ensures efficient heating by adjusting output based on demand
- Dual fuel capable – can be paired with a heat pump for optimized energy savings
- Fully insulated cabinet to enhance efficiency and reduce heat loss
- Wi-Fi-enabled control with Ion™ Black System Control for remote access and diagnostics
- Air purifier and humidifier compatibility for improved indoor air quality
- Sound-reducing features such as a soft-mounted blower and inducer motor for quiet operation
- Silicon nitride ignitor ensures reliable ignition and long lifespan
Performance and Efficiency
With a 97% AFUE rating, the Heil Ion™ 97 is one of the most efficient furnaces available. It means that only 3% of the heat energy is lost, maximizing fuel efficiency and reducing energy bills.
The variable-speed blower motor and two-stage gas valve work together to maintain even temperatures, avoiding sudden spikes in heating and improving comfort. This system allows the furnace to operate at a lower stage most of the time, ramping up to high stage only when necessary, reducing energy consumption and wear on components.
Additionally, the RPJ® stainless steel heat exchangers provide long-lasting durability, ensuring that the unit performs efficiently for years.
Benefits of the Heil Ion™ 97 - G97CTN
✔ Exceptional efficiency – 97% AFUE rating saves energy and reduces heating costs
✔ Consistent temperature control – Variable-speed blower ensures steady heating
✔ Quiet operation – Sound-reducing features for a peaceful home environment
✔ Dual-fuel capability – Can be paired with a heat pump for added efficiency
✔ Smart Wi-Fi control – Remote access with the Ion™ Black System Control
✔ Reliable and durable – RPJ® stainless steel heat exchangers and silicon nitride ignitor
✔ Improved indoor air quality – Compatible with air purifiers and humidifiers
✔ Advanced safety features – High-temperature limit control to prevent overheating
Warranty and Coverage
Heil provides strong warranty protection for the Ion™ 97 - G97CTN, giving homeowners confidence in their investment:
- 10-Year No Hassle Replacement™ Limited Warranty
- 10-Year Parts Limited Warranty (upon timely registration)
- Lifetime Heat Exchanger Limited Warranty (upon timely registration)
To ensure full warranty benefits, the unit must be registered within 90 days of installation and installed by a licensed professional.
Final Thoughts
The Heil Ion™ 97 - G97CTN is a top-tier gas furnace that offers high energy efficiency, exceptional comfort, and advanced smart features. With its variable-speed blower, two-stage gas valve, and Wi-Fi-enabled controls, this furnace is designed for modern homes seeking both performance and convenience.
If you’re looking for a quiet, energy-efficient, and intelligent heating solution, the Heil Ion™ 97 is a fantastic investment that will keep your home warm while lowering energy costs.