I have to admit that I had been a little lax about maintaining my heating and AC units. When I made an appointment with Missouri Furnace and AC they sent Brian. I thought he was excellent. He was very thorough. He found two things that definitely would have posed great danger in the future if they had not been taken care of by him. He really critiqued my filter and made some suggestions. He explained everything really well, and I was extremely pleased with him. I will be using him for future appointments.