CBK48MVT
Air Handler
Highest performance, highest-efficiency, fully digital, variable-speed air handler compatible with 2025 Compliant Refrigerant
R-454B
Features
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.
Digitally intelligent for accuracy and efficiency
This truly digital product is designed to pair with the Lennox S40 Smart Thermostat as part of a fully communicating home comfort system. Sensors in the equipment allow the thermostat to diagnose issues and automatically make system adjustments to more accurately and efficiently maintain temperature, humidity and air quality.
Our Uncontested Quantum™ Coil
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.
Ratings & Reviews
See what other customers are saying about
CBK48MVT Air Handler
4/5
Operation of Smart Thermostat Questionable
August 13, 2025System appears to be working as promised. I have several comments regarding the system operation. (1.) I have a 3-zone system and setting up the Smart Thermostat was not as straight-forward as it should have been. It took many hours and several technicians to finally get the naming of the zones and operation of the zones working properly. (2.) The remote thermostats (not the main Smart Thermostat) should have a one-touch capability of resuming scheduled operation, in the same manner the Smart Thermostat does. (3.) The system starts ramping down (for cooling) to the scheduled temperature TWO HOURS before the start of the next period. I find this to be far too long in advance to achieve the required temperature. My prior system seemed to "learn" what was necessary to ramp the temperature down to meet the next schedule setpoint, and it seems that it only took about 45 minutes to do so. This so-called "Smart" thermostat should have a learning capability, or alternatively, the ability to adjust the maximum time the system needs to satisfy the next setpoint. I think the way it currently operates may be wasteful of electricity.
5/5
New Lennox Heatpump
August 13, 2025We've only had our new Lennox heatpump about 6 weeks, but are very pleased at how well it's cooling our house. Due to its efficiency, we've had to limit the amount of air coming through the vents.
Yes, I recommend this product.
Harrisonburg, VA
Age: Over 65`
Reason for Replacement: Emergency
4/5
5/5
5/5
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