Active Heating, Inc. is the premier HVAC and plumbing provider in northeast South Dakota, proudly serving the Brookings and Watertown areas. We pride ourselves on providing timely, quality customer service while creating relationships that last a lifetime. For over 40 years, Active Heating has been serving the needs of residential, commercial, and industrial customers around the region. With heating, cooling, indoor air quality, and plumbing….you could say that we specialize in comfort. Whatever your HVAC or plumbing needs may be, our goal is to provide you with outstanding service and the comfort you depend on.