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 TM9Y Review: Quiet, Efficient Heating for Your Home

Average Price (Installed): $4,000 – $4,750
AFUE Rating: 96%
BTU Input: 40,000 – 120,000
BTU Output: 38,000 – 115,000
ENERGY STAR® Certified
Height: 33 inches

Top Features

Two-stage gas burner with constant torque ECM
Quiet inducer operation
Supports indoor air quality options
Induced combustion design eliminates the need for chimney venting
Compatible with Coleman HVAC split system indoor coils for year-round comfort
Highly efficient, capable of cutting fuel costs by up to 37%

The Bottom Line

The Coleman LX Series TM9Y is a highly efficient, quiet furnace designed for homeowners who value comfort, energy savings, and reliability. With its two-stage burner, variable-speed ECM blower, and compact design, it delivers consistent heating throughout the home without disrupting daily life.

In-Depth Review

Heating and Energy Efficiency

The TM9Y stands out for its energy-efficient design and performance:

Two-stage constant torque ECM: Enhances cooling SEER and improves airflow comfort profiles.
Continuous fan options: Supports superior indoor air quality.
Insulated blower compartment: Reduces heat loss and operational noise.
Electronic hot surface ignition: Conserves fuel and increases reliability.
Dual heat exchangers: Tubular steel primary heat exchanger with stainless steel aluminum fins plus a secondary heat exchanger maximizes heat transfer.
Durable, low-leakage cabinet: Ensures warm air reaches the home quietly and efficiently.
Condensing design: Extracts more heat from less fuel.
Minimal airflow leakage: Less than 1%, boosting energy efficiency.

Quiet Operation

The TM9Y operates silently, ensuring it won’t disrupt daily life:

Quiet inducer and blower operation
Insulated blower compartment reduces noise
Efficient airflow design maintains warmth without loud bursts

Safety Features

Coleman prioritizes safety with several built-in protections:

Main gas shutoff valve (1005)
Protection against air intake, condensate blockages, and exhaust vent issues
Sealed combustion system for safe operation

Warranty Information

The TM9Y comes with a strong warranty package:

Lifetime limited heat exchanger warranty
10-year limited parts warranty
5-year complete assurance warranty pledge

This ensures peace of mind and long-term reliability.

Installation and Technical Information

The TM9Y is designed for easy installation and maintenance:

Low current draw allows for simple replacement
Self-priming design with LP gas adaptability
Supports add-on cooling with 24V, 40VA blower relay and control transformer
Simple access to controls, wiring, and blower for maintenance
Quick bottom panel removal and quarter-turn knobs for easy servicing
Flexible installation options: two-pipe (closed combustion) or single-pipe vent
Compact design (33 inches tall) fits most residential spaces, including tight basements or closets

Final Verdict

The Coleman LX Series TM9Y is an efficient, reliable, and quiet furnace ideal for residential homes. Its two-stage burner, constant torque ECM, and energy-efficient design ensure consistent warmth while reducing fuel costs. Compact, flexible, and easy to install, the TM9Y is a smart choice for homeowners seeking long-term performance and comfort.