Both my wife and I have graduate degrees, so even though we may not be technicians, we know how to do research. Opie's One Hour Heating and Air Conditioning did some air conditioning service work for me and even though they got the unit repaired, they sold me a part for over two hundred dollars that only cost about fifteen dollars at the local hardware store. It was a huge rip-off. I'm not even sure I needed that part. I feel that the technician from Opie's One Hour Heating and Air Conditioning was not honest with me about the repair. I would not use them again.