Doctor Cool is my contractor for my home warranty. I've used them in the past to service my AC. They have been ok in the past. Recently had them come out to work on my AC after it stopped following some electrical issues. They were able to come out next day (I put in my request with my home warranty for the night before). They showed up when expected and replaced a component and got us up... for a day. The AC failed again the next evening and called them up the next morning. They were booked for the weekend and couldn't come out until Monday (Sunday it got to 111 outside). I ended up having to call someone else to come in. The other company found a different damaged component and replaced it. Apparently it was missed when checking it over the first time.
So, ok but could have been a bit more thorough and have more staff for weekends would be helpful.
(Semi related, I'm firing my home warranty because they won't bump things up or let me use a different contractor)