We initially had a good experience with Adams Refrigeration when they installed our A/C two years ago. They have been out twice a year since then to do check-ups. This last check-up we got a last minute cancelation from them. The appointment ended up being rescheduled a couple of times because of other emergency situations.
Two weeks after the tech performed the check-up we woke up to our thermostat not working at all. We assumed this would be a warranty issue as it is a new unit and they are the only ones that have touched it. It was a simple fix of a loose wire, but they still charged us even though it was their work. I will not be using a company that does not warranty their work.