back to blog

Guide to the Lennox CBK45UHV

Air handlers move air through your HVAC system, so they can be almost as important as your AC or furnace when maximizing comfort and air quality within your home. With a Lennox CBK45UHV, you get a durable and reliable air handler that can handle almost anything and integrate seamlessly with various HVAC systems.

Discover why the Lennox CBK45UHV might be the perfect air handler to enhance your HVAC system’s performance by reading our guide to:

  • Key features of the Lennox CBK45UHV
  • Energy efficiency and cost savings
  • Performance and comfort benefits
  • How it compares to other air handlers
  • Is the Lennox CBK45UHV the right choice for you?

With the right air handler, you can enjoy precision airflow and year-round comfort!


Experience Superior Comfort — Learn More About the CBK45UHV Now!

Take control of your comfort by upgrading to a new Lennox air handler. Our experienced technicians can help you find the best air handler for your home. With our fast, reliable service, we can even have it installed within a day.

Schedule Service


Key Features of the Lennox CBK45UHV

The Lennox CBK45UHV is a high-efficiency air handler with many standout features:

  • Variable-speed blower motor. The CBK45UHV’s motor adapts on the fly, allowing slow ramping of airflow to save power and avoid temperature fluctuations that may impact your family’s comfort.
  • Quantum™ Coil. Lennox’s durable aluminum coil withstands extreme weather and avoids corrosion, helping ensure your new air handler lasts many years.
  • iComfort integration. The Lennox CBK45UHV communicates with iComfort smart thermostats to provide more granular control via your phone and smart hubs like Alexa and Google Home.
  • SilentComfort. A fully insulated cabinet dampens sound within the air handler’s housing, helping ensure quiet performance.
  • R-454B compatibility. The Lennox CBK45UHV is compatible with 2025-compliant refrigerants such as R-454B, which have a lower environmental impact than older refrigerants.

Energy Efficiency and Cost Savings

Designed with energy efficiency in mind, the Lennox CBK45UHV features a variable-speed motor that adapts to the amount of airflow your HVAC system needs. This helps enable steady operation, reducing the high energy costs when your HVAC system is forced to cycle many times.

The Lennox CBK45UHV integrates seamlessly with air conditioners and heat pumps, helping them function more efficiently by delivering consistent airflow. With Quantum™ Coil, there’s also less risk of your air handler breaking down, reducing the number of repairs you might face across the system’s lifespan.

Performance and Comfort Benefits

Most homeowners prioritize comfort when choosing an air handler, and the Lennox CBK45UHV doesn’t disappoint. The variable-speed motor shines again, enabling smoother temperature changes and more consistent airflow regulation.

Other ways the CBK45UHV enhances comfort include:

  • Operating with minimal noise due to an insulated cabinet
  • Reducing humidity by ensuring air circulates evenly and efficiently
  • Improving air quality by integrating with Lennox’s Healthy Climate PureAir™ filtration system
  • Warming air with optional electric heat strips before circulating it on colder days

How It Compares to Other Air Handlers

The Lennox CBK45UHV offers dependable performance when compared to several other air handlers.

When compared to Carrier’s Infinity Series air handlers, Lennox’s Quantum™ Coil has the edge in durability and lower maintenance requirements. It can also be quieter and more efficient than Trane’s Hyperion Series, especially when paired with a Lennox Signature Series AC or heat pump.

Comparing the Lennox CBK45UHV against another popular Lennox air handler, the CBK48MV, you get similar benefits from the variable-speed operation. However, the Lennox CBK45UHV is more budget-friendly.

Is the Lennox CBK45UHV the Right Choice for You?

Wondering whether the Lennox CBK45UHV is the right air handler for you? Compatibility is one concern, as your existing HVAC system may dictate the type of air handlers you can upgrade to. However, this is something we can help you assess!

Overall, the Lennox CBK45UHV is an excellent air handler for homeowners who want the high performance of a variable-speed system without the hefty price tag these systems typically entail. It’s also a great air handler for homeowners who want to save on their energy bills, limit their environmental impact, and gain access to smart thermostat technology.


Upgrade to the Lennox CBK45UHV — Get a Free Quote Today!

Trust your air handler installation to your local Lennox Partner of the Year. Award-winning service and decades of experience make Champion Air the trusted name for all HVAC upgrades. Contact us today to install your new Lennox CBK45UHV!

Need Help?

We’ll handle it. No Excuses!

Our Promotions

New Year, New Me, New AC Up to $2,200 off & No Payments Until 2028. 
Deep Dive Diagnostic: $119 (Waived with Approved Repairs) Schedule Today!
Free Service Call + $70 Off with Approved Repair Some Restrictions Apply.
NO PAYMENTS 0% Interest Until 2028! Upgrade your AC system and receive a Free duct cleaning and up to $3,200 in rebates O.A.C. Some restrictions apply.
Enjoy 24 months of 0% interest and no payments. That's right pay nothing until 2028! Cannot be combined with other offers. O.A.C.
Home Heating & Indoor Air Tune-Up $54.95 Includes comprehensive 54-point analysis. Up to 1lb. of refrigerant, & camera inspection. Cannot be combined with other offers.
Airflow Tune-Up $54.95 Analyze & Address hot or cold spots in your home Cannot be combined with other offers.
FREE Home Duct Cleaning Upgrade your AC system and receive a FREE duct cleaning Some restrictions apply. Cannot be combined with other offers.
Champion Air truck and team
Introducing ChampionCare: The Most Popular Maintenance Plan in the Valley
  • 2 maintenance visits per year
  • Members-only hotline for faster service
  • 15% off any repairs needed
  • 24/7 Online Portal Access
  • Waived diagnostic fees
Champion Air truck and team Champion Air truck and team
Introducing ChampionCare: The Most Popular Maintenance Plan in the Valley Exclusive Savings. Faster Service. Unbeatable Value.
  • 2 maintenance visits per year
  • Members-only hotline for faster service
  • 15% off any repairs needed
  • 24/7 Online Portal Access
  • Waived diagnostic fees