Who is HVAC Systems, Inc HVAC Systems, Inc is a full service heating, ventilation, and air conditioning company serving the commercial, industrial, and institutional market in southeast Michigan. HVAC Systems, Inc was founded in 1996, and incorporated in 1997 by our President and CEO Robert M. Toon. Our company provides service to a broad range of customers including high rise apartments, office buildings, retail stores, restaurants, manufacturing, light industrial, medical facilities, to waste water treatment plants and more. What ever your needs may be we can tailor a plan to maintain your facility in a clean, professional, and efficient manner. We understand the challenges companies face with tight budgets. Rather than just trying to make a sale we will always present alternative options when available. If you are looking for a contractor in the Detroit or southeast Michigan area and want a quality service company that you can depend on, then HVAC Systems, Inc is the company for you.