Phoenix Commercial Rooftop HVAC Systems Bob Brown Service Experts Heating & Air in Phoenix lets you choose from multiple commercial rooftop HVAC products and services. For example, Lennox® packaged rooftop commercial HVAC systems are are some of the most innovative products on the market 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 reliable, sustainable systems designed to provide exceptional comfort and indoor air quality (IAQ) in your commercial spaces. Additionally, three of our four systems – Energence, Strategos® and Landmark® - are certified by ENERGY STAR®, which will help decrease your energy expenses, meaning you’ll have a lower total cost of ownership. Call 623-243-4517 to learn more.