Lennox Air Handlers

Lennox® air handlers are among the most efficient and quietest you can buy.

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CBK48MVT Air Handler
Highest performance, highest-efficiency, fully digital, variable-speed air handler compatible with 2025 Compliant Refrigerant

Energy efficiency that adapts to meet your needs.

Equipped with an efficient variable-speed blower motor with the ability to slowly ramp the airflow up or down to provide consistently even temperatures as it only produces the necessary amount of airflow at any given time.


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.


The perfect amount of quiet.

Made with a fully insulated cabinet, special sound-absorbing materials and sturdy burners to reduce noise, this furnace is designed to operate extremely quietly, so you can relax in peaceful warmth.


LOWER OPERATING COSTS

• The separated combustion technology enhances overall energy efficiency of the building by eliminating the continued replacement of conditioned air with unconditioned outside air.

• Up to 5% more efficient than standard efficiency direct-fired unit heaters**

• LS25-250 through LS25-400 kBtuh models lower operating costs by efficiently meeting the demands of the space with two stages of heating.


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.


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.