Pierre Commercial Rooftop HVAC Systems Peitz Service Experts Heating & Air Conditioning in Pierre gives you choice in commercial rooftop HVAC products and services. For example, 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 dependable, sustainable systems created to bring outstanding comfort and indoor air quality (IAQ) in your commercial offices. Further, three of our four units – Energence, Strategos® and Landmark® - are certified by ENERGY STAR®, which will help reduce your energy expenses, leading to a lower total cost of ownership. Call 605-223-0307 to learn more.