Climate Systems is proud to introduce the Lennox’s new Rooftop Series, composed of the industry-leading Model L, Enlight, and Xion rooftop units to accommodate the new DOE standards for 2023. Lennox’s reference guide for new Regulatory Requirements.
Lennox is committed to building innovative, quality products that transform the industry while providing customers and partners with the HVAC solutions they need to achieve their goals. This RTU Series delivers on Lennox’s promise to be recognized as the highest quality and most innovative commercial HVAC solutions provider.
Click below to watch a video on the Model L.

Model L Highlights:
- Energy Optimization: Model L rooftop units deliver the lowest total cost of ownership through variable-speed components and intelligent operation.
- Complete Comfort: Advanced technologies deliver premium comfort and indoor air quality in a wide range of applications.
- Engineered Intelligence: The Lennox® CORE Control System delivers connected service, open integration, reliable performance, and efficiency optimization to empower all parts of your organization.
- Simple Service: Model L rooftop units maximize efficiency of maintenance and service operations, reducing operational costs and minimizing downtime.
Download the product guide here.
Climate Systems provides fresh commercial HVAC innovations to the Sioux Falls area. Call 605.334.2164, email info@climatesystemsinc.com or visit climatesystemsinc.com to learn more.


