I have been using Clyde S Walton Inc. since the 1970s! I had an uncle who worked for them, and they always did such a good job, I just kept on using them. I am on my third home since then, and I still use them! A few days ago they came out to service my gas heater and my air conditioning unit. They are dependable, and their service personnel are very friendly people. If there ever is a problem, they take care of it quickly. They are a great company, and I intend to keep on using them!