MRCOOL Signature 96% AFUE, 45K BTU, 3 Ton, Multi Position Gas Furnace - 17.5-Inch Cabinet (MGM96SE045B3XA)

MRCOOL Signature 96% AFUE, 45K BTU, 3 Ton, Multi Position Gas Furnace - 17.5-Inch Cabinet (MGM96SE045B3XA)

The MRCOOL® Signature Series Single-Stage 96% AFUE 45k BTU gas furnace is a quiet-running, low NOx, and energy efficient unit that provides superior warmth during the harshest winter weather.

With a 96% AFUE, the furnace features a multi-speed high efficiency blower motor and offers enhanced cooling SEER ratings when applied with properly matched cooling equipment. It features a durable build and finish with an aluminized steel primary heat exchanger with crimped non-welded construction. The aluminized steel inshot burners provide smooth ignition with a durable silicon nitride ignitor. Thanks to the single-stage gas valve, you can expect your home to be heated quickly. With a compact 33-inch design, a left or right utility connection, and a zero step horizontal conversion, installation is easy and time-saving. It also features standardized widths for easy coil fit, a removable floor base for bottom return air, and can be easily vented with PVC pipe.

The furnace is design certified for direct and non direct applications, and an optional LP kit is available to easily convert the unit to a liquid propane configuration. Maintenance of the unit is easy thanks to the easily removable slide out blower design. MRCOOL® proudly offers a 10-year parts warranty and a lifetime heat exchanger warranty to provide peace of mind.

Specifications

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What our Experts Think

• High-Efficiency Heating – 96% AFUE delivers maximum heat output with minimal energy waste.

• Optimal Capacity – 45K BTU, 3-ton rating perfect for medium to large homes.

• Multiposition Design – Fits horizontal, upflow, or downflow configurations for flexible installation.

• Compact Cabinet – 17.5-inch width makes it ideal for tight spaces without sacrificing performance.

• Durable & Reliable – Engineered for long-lasting operation and consistent comfort.

Q&A

Q: What is the heating capacity of this furnace?
A: The MRCOOL MGM96SE045B3XA delivers 45,000 BTU (3 ton) heating power, ideal for small to medium homes.

Q: How efficient is this furnace?
A: It operates at 96% AFUE, providing high-efficiency heating while reducing energy costs.

Q: What installation positions are supported?
A: The furnace is multi-position, supporting upflow, downflow, and horizontal installations for flexible placement.

Q: What cabinet size does it have?
A: The furnace comes in a 17.5-inch cabinet, compact for tight spaces and easy installation.

Q: Can it pair with MRCOOL air conditioners?
A: Yes, it works with compatible 3-ton AC systems for complete year-round comfort.

Q: Who should use this furnace?
A: Ideal for homeowners and HVAC contractors seeking a high-efficiency, versatile, and reliable gas furnace.

Maintenance Tips

• Replace or clean air filters every 1–2 months for consistent airflow.

• Inspect burners, heat exchanger, and flame sensor for proper operation.

• Keep vents and surrounding area free of dust and blockages.

• Check condensate drain and hoses for leaks or clogs.

• Test thermostat and blower motor function regularly.

• Schedule annual professional servicing to ensure safe, efficient heating and extended system life.