My upstairs air conditioner was not working. I called Legacy Air and they came out earlier than they had said. When the guy got here he went up on the roof to check out the AC came down a bit later and said it was working fine. He decided to stay a while and let it run and just make sure. Sure enough when he went back to check it it had quit working. He was able to fix the problem in about an hour. I would use them again and refer my friends and family to them.