San Antonio Commercial Rooftop HVAC Systems San Antonio Air Service Experts Heating & Air Conditioning in San Antonio lets you choose from multiple commercial rooftop HVAC products and services. Lennox® packaged rooftop commercial HVAC systems are top the list of the most innovative products you can find today, including the new solar powered SunSource® System for Energence® rooftop HVAC systems. Our industry-leading technology combined with our expert installation and services means you’ll receive long-lasting, sustainable systems created to deliver superior comfort and indoor air quality (IAQ) in your commercial buildings. In addition, three of our four units – 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 210-570-9705 to learn more.