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
5/5
5/5
5/5
Performance of new Lennox air conditioning system
June 16, 2026So far, the new system is performing very well. It keeps our 1860 sq. ft. cathedral ceiling living room FL condo. at 75-76 degrees even when the outside temp. is in the 90s. My only minor complaint is that the system is noisier than our old system.
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