Introducing our most powerful, most advanced rooftop unit in the industry. An ultra-efficient design delivers complete comfort at the lowest total cost of ownership, while also reducing maintenance and service time.
The new Model L™ rooftops feature the revolutionary Lennox® CORE Unit Controller and advanced variable-speed technology to maximize energy savings. But that’s just the beginning. Premium diagnostic features reduce installation, service and maintenance to provide the lowest total cost of ownership in the industry.
Model L rooftop units deliver the lowest total cost of ownership through variable-speed components and intelligent operation.
Advanced technologies deliver premium comfort and indoor air quality in a wide range of applications.
The Lennox® CORE Control System delivers connected service, open integration, reliable performance, and efficiency optimization to empower all parts of your organization.
Model L rooftop units maximize efficiency of maintenance and service operations, reducing operational costs and minimizing downtime.
Factory integrated options provide ideal indoor air quality solutions for a variety of commercial spaces.
Model L units feature a lead variable-speed compressor and variable-speed blower to maintain a constant discharge air and room temperature to efficiently deliver complete comfort.
Humiditrol+ is a modulating hot-gas reheat dehumidification system that can vary the sensible and latent capacity of the Model L unit to better match the dehumidification demand of the space.
Model L units are enabled with an enhanced dehumidification (EDH) mode, which is designed to provide additional dehumidification when both cooling and dehumidification demands are present.
3-12.5-ton Model units are equipped with a direct-drive, variable-speed blower that eliminates maintenance and service costs associated with traditional belt-drive motors.
CORE unit controller is designed to accelerate equipment install and service. Standard with all Model L rooftop units, CORE integrates key technologies that lower install costs, drive system efficiency, and enable smarter asset management.
Open integration and control with standard BACnet IP & MS/TP, LONtalk, thermostats, and all-new wireless sensors empowers customers to choose their own building controls, allowing simple or tailored operation.
Variable-speed compressor matches the load in the space to reduce compressor cycling while delivering superior comfort and efficiency.
DirectPlus™ blower system is a fully variable, high-efficiency motor with a direct-mounted, backwards-curved impeller that provides exceptional performance and lower service and operating costs.
Humiditrol™+ is a modulating hot-gas reheat dehumidification system that can vary the sensible and latent capacity of the Model L unit to dehumidify the space without overcooling it.
Diagnostics and sensor package monitors component performance, tracks capacity and efficiency, and alerts when necessary, enabling smart asset management.
The copper tube construction, enhanced ripple-edge aluminum fins, flared shoulder tubing connections and silver soldered construction provide exceptional efficiency.
Variable-speed outdoor fan modulates to allow for quiet, efficient year-round operation and mechanical cooling operation down to 0°F.
Providing exceptional performance and efficiency, the Lennox Model L™ rooftop units and the CORE Control System utilize optional wireless sensors, a mobile service app and a built-in wireless gateway to deliver the lowest cost of ownership.
The Lennox® CORE Service App replaces a traditional built-in user interface on the CORE Unit Controller and provides guided setup menus for install, test and balance, and network integration. Reports that detail runtimes and service history can be exported from the app. The app also facilitates seamless commissioning of wireless sensors and sensor networks compatible with the CORE Control System.
The CORE Control System reinvents the service process with a wireless mobile service app, making setup and service faster than ever before.
The CORE Unit Controller empowers customers to choose their building controls, allowing simple or tailored operation.
The CORE Control System uses built-in algorithms to deliver key performance indicators and drive unit components simply and reliably.
The CORE Unit Controller optimizes unit operation in real-time by processing advanced sensor inputs, maximizing energy efficiency and space comfort.
Using a built-in wireless gateway on the CORE Unit Controller, The CORE Service App replaces a traditional built-in user interface. Simple guided setup, real-time data readouts and enhanced test functionalities make servicing Lennox rooftop units easier than ever before.
Enhanced test functionality provides real-time sensor readings, trending and reports that enable easy troubleshooting.
Guided setup with progress indicators, detailed help and exportable summaries drives simple and trouble-free setup, reducing commissioning times over similar systems.
Calculate how much you can save with the Model L compared to similar rooftop units.
*When compared to the Lennox [Energence RTU] model. The Total Cost of Ownership Calculator (the “Calculator”) was built using third party building simulation software. Although a considerable amount of research has been conducted to create the Calculator, the information provided herein is merely an estimate of potential savings, intended to be informational only, and is subject to change without notice. Actual savings will depend on many factors, including space occupant load, building size, hours of operation, specific geographic location, weather, and other external factors. To receive accurate information, a full building study and simulation may be required. LENNOX INTERNATIONAL INC. (“LII”) MAKES NO WARRANTY OR GUARANTEE OF ANY KIND, EXPRESS OR IMPLIED, REGARDING THE INFORMATION SET FORTH HEREIN OR OTHERWISE PROVIDED THROUGH THE CALCULATOR, INCLUDING WITHOUT LIMITAITON ANY WARRANTY REGARDING ITS ACCURACY, COMPLETENESS, RELIABILITY, OR SUITABILITY, OR ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SUCH ESTIMATES OF SAVINGS ARE NOT A GUARANTEE OF SAVINGS, AND IN NO EVENT WILL ANY REFUND BE GIVEN IN CONNECTION WITH AN ESTIMATE OR THIS CALCULATOR.
IN NO EVENT WILL LII BE LIABLE FOR ANY DAMAGES, INCLUDING CONSEQUENTIAL, INCIDENTAL, DIRECT, INDIRECT, SPECIAL, PUNITIVE, OR EXEMPLARY DAMAGES, ARISING OUT OF OR IN ANY WAY RELATED TO THE USE OF OR INABILITY TO USE THE CALCULATOR (WHETHER BASED ON CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE). ANY RELIANCE ON THE CALCULATOR IS STRICTLY AT THE RISK OF THE USER.
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*When compared to the Lennox [Energence RTU] model. The Total Cost of Ownership Calculator (the “Calculator”) was built using third party building simulation software. Although a considerable amount of research has been conducted to create the Calculator, the information provided herein is merely an estimate of potential savings, intended to be informational only, and is subject to change without notice. Actual savings will depend on many factors, including space occupant load, building size, hours of operation, specific geographic location, weather, and other external factors. To receive accurate information, a full building study and simulation may be required. LENNOX INTERNATIONAL INC. (“LII”) MAKES NO WARRANTY OR GUARANTEE OF ANY KIND, EXPRESS OR IMPLIED, REGARDING THE INFORMATION SET FORTH HEREIN OR OTHERWISE PROVIDED THROUGH THE CALCULATOR, INCLUDING WITHOUT LIMITAITON ANY WARRANTY REGARDING ITS ACCURACY, COMPLETENESS, RELIABILITY, OR SUITABILITY, OR ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SUCH ESTIMATES OF SAVINGS ARE NOT A GUARANTEE OF SAVINGS, AND IN NO EVENT WILL ANY REFUND BE GIVEN IN CONNECTION WITH AN ESTIMATE OR THIS CALCULATOR.
IN NO EVENT WILL LII BE LIABLE FOR ANY DAMAGES, INCLUDING CONSEQUENTIAL, INCIDENTAL, DIRECT, INDIRECT, SPECIAL, PUNITIVE, OR EXEMPLARY DAMAGES, ARISING OUT OF OR IN ANY WAY RELATED TO THE USE OF OR INABILITY TO USE THE CALCULATOR (WHETHER BASED ON CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE). ANY RELIANCE ON THE CALCULATOR IS STRICTLY AT THE RISK OF THE USER.
