For years, I've been using Tim Lewis whenever we've had any heating/air problems and he's always bent over backwards to take care of us even in the hottest or coldest of days. He even worked on our outside compressor once in the pouring rain. But the best thing I can say is that my daughter and son-in-law living in Richardson with a 10 month old baby lost AC on a hot, hot, hot Sunday evening. They couldn't get a "24 hour" company to come out because they don't own the house but rent. I suggested they call Tim and he was at their house within an hour, fixed the problem and didn't have to wake a sleeping baby to go to a hotel. I can't say enough about Tim and his one-man company that somehow always seems to be able to solve any problem. Give up on the big, corporate companies; call Tim!!!