General Info

At Greg Hahn Heating and Air Conditioning, we’re proud to serve Decatur and the surrounding communities with trusted, reliable HVAC services. As a locally owned and operated business, we specialize in heating, cooling, and air quality solutions for both residential and commercial customers. Our team is dedicated to keeping your home or business comfortable year-round by providing expert installation, maintenance, and repair services for furnaces, air conditioners, heat pumps, and indoor air systems. We focus on personalized service, honest advice, and quality workmanship so you can feel confident that your HVAC needs are in good hands. Whether you need a tune-up before the seasons change, a quick repair, or a brand-new system installation, Greg Hahn Heating and Air Conditioning is here to help with prompt, professional service you can trust. Call us today at (217) 428-4545 to schedule an appointment or learn more about how we can improve your indoor comfort.