Lennox CBK45UHET Air Handler

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
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.