I didn't find this company by choice . . . my landlord's home warranty company sent them out. The office staff called right away to schedule, and gave me a four hour window which I expected to be complete fantasy. Surprise! At the early end of the window the guy called to say he was on his way. He showed up and got right to work. I have no idea what he did, but the air is blowing cold and not making that strange noise anymore. He cleaned up, asked if there was anything I had questions about or wanted explained, and left me with the number to call if I have any problems. Overall a good experience out of a bad situation.