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Model L Rooftop Units From Lennox  

Model L rooftop units from Lennox represent the latest advancements in the commercial HVAC industry.  Puget Sound business owners will benefit from its ultra-efficient design that delivers the absolute highest level of performance, comfort, and control.

Reduces lifetime ownership cost.

The Model L line can adapt to changing loads and fresh air requirements to make it the ideal solution for a wide range of commercial applications.

Leading the way in commercial HVAC

The Model L line is the proof that Lennox continues to be a leader in the HVAC field.  This line features the new Lennox CORE Control System (with service app) which ensures it always works at peak efficiency.

With gas/electric and electric/electric models ranging from 3-25 tons, these Energy Star Certified units deliver up to 22.5 SEER, 23.3 IEER, and 15.0 EER.

Lowest energy cost

Variable-speed components are combined with intelligent operation to give these units the highest efficiency ratings in their class. This qualifies them for rebates so you can recoup some of your investment right away. 

Its humidity control with enhanced humidification and optional Humiditrol system reduces energy usage even more when compared to traditional hot-gas reheat systems.

Engineered intelligence from Lennox

The Lennox CORE Control System is the reason why these RTUs have such reliable performance and high efficiency.  For convenience, the mobile app interface and all-new wireless sensors allow freedom to check and/or adjust settings from your mobile device.

Diagnostics and sensor system monitors component performance and tracks capacity and efficiency.  Alerts are sent (when necessary) so you will know right away if there’s a problem.

Complete comfort

Modulating compressors and fans continually adjust in small increments to precisely match your comfort settings, whether you have a single or multi-zone VAV applications. UVC germicidal lights and high-efficiency MERV filter options improve the indoor air quality (IAQ).  

Humidity is the other factor for increasing comfort.  The Humiditrol system is responsible for providing more efficient dehumidification to further enhance IAQ and comfort no matter what the weather is like.

Simple service

You may think all these smart systems and modulating components would increase the unit’s maintenance and service time, but you’d be wrong.  Model L RTUs are built to be installed faster and easier thanks to the mobile app interface which is superior to traditional built-in interfaces.  How?  It integrates diagnostics, testing and troubleshooting functions.

The DirectPlus blower (that’s standard up to 12.5 tons) doesn’t require traditional belt-drive maintenance and service costs. The Simple Service System has many features to reduce service time, such as no-tool filter access, slide-out blower, isolated compressor compartment and easy-access gas compartment.

Advanced HVAC solutions

Lennox CORE control system delivers convenience.

The low cost of ownership associated with this line is due (in a large part) to its CORE control system, which uses optional wireless sensors, a mobile service app and built-in wireless gateway.

Please note-the service app takes the place of a traditional built-in user interface and has a guided setup menu for installing, testing/balancing and network integration. 

CORE service app

Installations are much quicker as the app guides the technician through setup that includes progress indicators, exportable reports, and detailed help.  Also helpful are the detailed reports with runtimes and service history that can be exported from the app.

Servicing and troubleshooting are made easier with real-time sensor and data readouts.  Enhanced test functionalities include real-time readings, trends and reports that help with isolating the issues for a faster diagnosis.

Request your free estimate

Contact K & D Mechanical, Inc. to schedule your free estimate for Model L rooftop units or other HVAC equipment.