

Coleman LX Series – TM8Y Review
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AFUE:Up to 80%
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Burner Type:Multi-Stage
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Blower Type:5-speed blower 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:58,000 - 116,000
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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.
Coleman Brand Overall Rating & Average Price
In a Nutshell
Average Price (installed): $3,800 - $4,800
Top Features
- AFUE: 80%
- BTU input: 60,000 to 120,000
- BTU output: 48,000 to 96,000
- Burner: Two-stage
- Blower: Variable-speed ECM
- Base Warranty: 5 years (Parts), 20 years (Heat Exchanger)
- Registered Warranty: 10 years (Parts), Lifetime (Heat Exchanger)
- ENERGY STAR® Certified: No
- Overall Score: 42%
- Warranty Score: 52%
The Bottom Line
The Coleman LX Series TM8Y is an economical, mid-efficiency furnace with an 80% AFUE rating. Featuring a two-stage burner and a variable-speed ECM blower, it offers improved comfort and efficiency compared to single-stage models. While it lacks ENERGY STAR® certification, it provides steady heating performance and comes with strong warranty coverage, making it a reliable choice for homeowners in milder climates.
In-Depth Review
Heating Efficiency
With an 80% AFUE rating, the TM8Y efficiently converts fuel into heat, making it a suitable option for regions with moderate winters. Notable efficiency features include:
- Two-stage burner, allowing for lower energy consumption during mild weather and full power during colder days.
- Variable-speed ECM blower, enhancing airflow efficiency and overall comfort.
Comfort and Performance
The two-stage burner enables the TM8Y to operate at a lower heat setting most of the time, reducing energy waste and maintaining more consistent indoor temperatures. The variable-speed blower further improves comfort by adjusting airflow based on demand, reducing hot and cold spots.
Noise Reduction
- Variable-speed ECM blower ensures quieter operation compared to traditional fixed-speed models.
- Sealed cabinet design minimizes sound levels for a more peaceful home environment.
Safety Features
The TM8Y is equipped with essential safety features, including:
- Automatic gas shutoff, preventing potential gas leaks.
- Pressure switches, ensuring safe airflow and combustion.
- Sealed combustion system, improving indoor air quality and reducing exposure to harmful gases.
Warranty Information
The TM8Y comes with strong warranty coverage, offering peace of mind:
- Base Warranty: 5 years on parts, 20 years on the heat exchanger.
- Registered Warranty: 10 years on parts, lifetime coverage on the heat exchanger.
- Unit Replacement Warranty: 5 years.
Installation and Sizing
This model supports upflow and horizontal installation, making it a flexible option for various home layouts. Its compact design allows for easy installation in tight spaces like closets or basements.
Final Verdict
The Coleman LX Series TM8Y is a reliable and cost-effective furnace for homeowners in mild climates. With a two-stage burner, variable-speed blower, and strong warranty, it provides better efficiency and comfort than single-stage models. If you're looking for a mid-range furnace with enhanced performance and affordability, the TM8Y is a solid choice.