Plano Commercial Rooftop HVAC Systems Levy & Son in Plano gives you choice in commercial rooftop HVAC products and services. For instance, Lennox® packaged rooftop commercial HVAC systems are among the most innovative products you can find today, including the new solar powered SunSource® System for Energence® rooftop HVAC systems. By combining industry-leading technology and efficiency with our expert services, you will receive long-lasting, sustainable systems designed to bring outstanding comfort and indoor air quality (IAQ) in your commercial spaces. In addition, three of our four rooftop systems – Energence, Strategos® and Landmark® - are certified by ENERGY STAR®, which will help reduce your energy expenses, translating to a lower total cost of ownership. Call 469-249-1971 to learn more.