As usual my experience with Carolina Heating and Cooling was very positive. TJ was very professional and kind. He called prior to my appointment to verify that I was expecting him. He thoroughly checked all of our equipment and explained what he was doing. After completing the maintenance he also checked our smoke alarms (after checking with me first). I received detailed information concerning the maintenance both verbally and in written form. I appreciate the level of service we receive from Carolina and the professionalism from all the employees I have encountered.