CBK45UHET
Air Handler
Standard performance, high-efficiency, constant-torque air handler compatible with 2025 Compliant Refrigerant
R-454B
Features
Constant torque, constant efficiency
The Power Saver™ constant-torque motor adjusts airspeed based on demand. 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
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
CBK45UHET Air Handler
4/5
3/5
Machine shutting down
June 06, 2026The a/c was working good. We moved in here in August. About 3 weeks ago the system started shutting down. I disconnect the power from the box in the attic. Then it starts to work again. The thermostat shows that the a/c and the fan are on, but they are not. I would like your help to solve this problem. Thank you, Raul C Molina
San Antonio TX
Age: 55 - 65
Gender: Male
Reason for Replacement: New home purchase
5/5
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