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

Coleman LX Series TM9E Review: Energy-Efficient, Quiet, and Reliable

Average Price (Installed): $4,000 – $4,750
AFUE Rating: 95%
BTU Input: 40,000 – 120,000
BTU Output: 38,000 – 114,000
ENERGY STAR® Certified
Fuel Savings: Up to 37% compared to older models
Cabinet Height: 33 inches

Top Features

Single-stage, 5-speed direct drive Standard ECM compressor
Quiet inducer operation
Supports indoor air quality (IAQ) options
Induced combustion design eliminates the need for chimney venting
Convertible for propane (LP) gas use
Built-in self-diagnostics for reliable operation
Compact 33-inch cabinet for flexible installation

The Bottom Line

The Coleman LX Series TM9E is an Energy Star Certified furnace that combines reliability, energy efficiency, and quiet operation. Perfect for homeowners replacing older furnaces, it delivers consistent comfort while reducing fuel costs, making it a smart investment for long-term performance.

In-Depth Review

Energy and Heating Efficiency

The TM9E offers high energy and heat efficiency, helping homeowners save on fuel while maintaining a comfortable home environment. Key efficiency features include:

5-speed direct drive Standard ECM motor: Ensures efficient airflow and optimal comfort
High-efficiency blower motor: Reduces electricity usage and improves A/C SEER ratings
Insulated blower compartment: Enhances thermal and acoustic performance
Blower-off delay: Improves cooling efficiency
Electronic Hot Surface Ignition: Saves fuel and increases reliability
Tubular aluminized steel primary heat exchanger with stainless steel secondary heat exchanger: Maximizes heat transfer
Condensing design: Extracts more heat from less gas, improving overall efficiency

These features allow the TM9E to provide consistent warmth without wasting energy, making it one of the most efficient furnaces in its class.

Quiet Operation

The TM9E is designed for quiet performance, featuring a silent inducer operation and well-insulated components, ensuring that your home remains peaceful while the furnace runs.

Safety Features

Safety is a priority with the TM9E:

100% shutoff main gas valve for enhanced safety
Built-in self-diagnostics: Alerts you to potential issues before they become major problems
Multiple safeguards for air intake, venting, and condensate management

Warranty Information

Coleman provides a comprehensive warranty package for the TM9E:

Lifetime limited heat exchanger warranty
10-year limited parts warranty
5-year Complete Assurance™ warranty pledge

Installation and Technical Information

The TM9E is designed for easy installation and flexible application:

Simple power and control wiring access
Low amp requirement for quick replacement
Removable bottom panel for easy maintenance
24V, 40VA control transformer and blower relay supplied for add-on cooling
Movable duct connectors for flexible installation
Compatible with upflow, horizontal, and downflow configurations
Can be vented as sealed combustion or using indoor air
Rotating inducer for flexible venting options
Easy blower access for maintenance
Compact 33-inch cabinet for tight spaces
¼ turn knobs for simple door removal
Self-priming internal condensate trap for hassle-free installation

Final Verdict

The Coleman LX Series TM9E is a safe, efficient, and reliable furnace ideal for homeowners looking to replace older systems. With Energy Star certification, quiet operation, top-tier energy efficiency, and a strong warranty, the TM9E delivers long-lasting comfort and peace of mind.