He has been here for a problem with my furnace the happens once in a million years, and he took it all apart and found why we had no heat last year. There had been many other tech's that never saw/mentioned the problem, so, we were very happy to know that he was the tech that came out today to check and clean our ac and make sure it is ready when we need it. He asks if we have any questions and tells us everything he is doing, and what may need to be done.