I had a problem where my outside unit was freezing up. Really hot day. Called several companies and most couldn't come out for at least 24 hours and ALL OF THEM told me it sounded serious and I might be without service until it can be replaced. I live in Tempe and try to use Tempe businesses. Saw Schiller's on Yelp and Angie's List. Called them and explained to Heather my problem. She said it would be the next day but suggested that it might be a dirty filter and gave me a couple of simple instructions and within 2 hours we were back in business! No down time, replacing major components. I arranged for the Spring Tune Up on both units and Brandon and James came out and explained everything in need. $ 200 later they were on there way and I can't tell you how nice it was to have an honest repair company at my home.
I am sharing the word with everyone I know.