Active Heating, Inc. is the premier HVAC dealer 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, and indoor air quality….you could say that we specialize in comfort. Whatever your HVAC needs may be, our goal is to provide you with outstanding service and the comfort you depend on.

Happy family
Business Meeting

Active heating did a fantastic job replacing our furnace. Not only did we find them to be professional, efficient and knowledgeable but we felt Cory did a fantastic job with getting everything together to include the financing. Dell also took the time to go over questions, gave maintenance advice and tips. We will definitely call Active Heating back and recommend them. Outstanding team!

- Jessica Johnson, Watertown, SD 



Next to your home itself, a home comfort system is one of your largest investments. Here are answers to ten common questions to help you make an intelligent HVAC choice.