Welcome to Donald A Guy Heating & Cooling, Inc.! We are a full-service HVAC contractor serving Tallahassee and beyond. We can repair and install air conditioning units and heating systems. We are experienced and equipped to handle anything from routine maintenance on a residential system to complete turnkey installations for commercial properties. No job is too big or small for us here at Donald A Guy Heating & Cooling, Inc.! We have high-quality products that will last years to keep your home or office at the right temperature. We are reliable and will not stop working until the job gets done. Stop by or call Donald A Guy Heating & Cooling, Inc. today!