Commercial Facility HVAC Mechanical Services for the Tri-State Area. Whether you own, operate, or manage a commercial property, keeping every part of it in excellent condition is a major priority to you, and if you’re going to keep the property comfortable and efficient, HVAC services are extremely important. At South Jersey Heating and Air, our Southern NJ commercial HVAC experts are dedicated to providing the highest quality workmanship to every one of our clients. Whether you need regular maintenance services, in-depth repairs, or an installation of a new heating or cooling system, our professionals are always performance driven.