CBK43UHET

NEW!

Air Handler

Standard performance, high-efficiency, constant-torque, compact air handler compatible with 2025 Compliant Refrigerant

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Warranty

Merit models come with a 5-Year Limited Warranty on compressors and a 5-Year Limited Warranty on covered components. A 10-Year Extended Limited Warranty is available with product registration. For more information, visit www.Lennox.com/WarrantyYourWay.

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Features

Constant torque, constant efficiency

The CBK43UHET’s 9-speed Power Saver™ constant-torque motor adjusts airspeed based on demand, and its dual voltage option allows for installation flexibility in regions where 115-120V usage is common. This helps the air handler use less energy in both heating and cooling modes.

Optional electric heat

Your dealer can customize your air handler to your home by installing optional electric heat strips. These preheat air before circulating it through the home and delivers heat in stages to help prevent drafts.

Quiet and reliable

Fully-insulated cabinet reduces sound for quiet operation and helps prevent cabinet sweating in hot and humid environments.

Our Uncontested Quantum™ Coil

With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.

Compact design for easy installs

Thanks to its compact design, this air handler can fit into tight spaces like attics and closets without the hassle of renovations. Its smaller size also makes installation and servicing easier, potentially reducing labor costs.

A refrigerant that’s better for the environment.

This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.