They were phenomenal. The MOST un-lazy service people ever! He wanted to exhaust all of the other possibilities before he decided what the problem was. He ran lots of tests to find a solution. He was more diligent and more professional than anyone else I had previously used & charged me less(way, way less) as well. He was a pleasure to work with, completely honest, trustworthy and the absolute picture of integrity. If your AC ever goes out, this IS the company to call — hands down!