I used Comfort Control Systems, Inc. for years and years, and was very satisfied with their services. Then I went to work for a competing heating and air company. So, for a few years I was more or less obligated to use the company I worked for. But, that company could not fix my furnace for me! The unit kept shutting off on me. They came out twice to fix it, and they charged me both times, but it still did not work right. (But I did get an Employee Discount!) So, as soon as I stopped working for that company, I called Comfort Control Systems, Inc. to come out and fix my furnace, which they did the first time out! It was one of the older gentlemen, whom I remembered from a few years earlier. He fixed it, and he fixed it right. Overall, I have found their employees to be very nice people, and very competent! I have already recommended them to my father, and a few neighbors.