I have used A/C Doctors three times in the past. The last time they came out and did what I call a "summer blowout" where they do a maintenance service check and make sure the unit is ready for the upcoming season. In Texas, it is very important to have a functioning air conditioning unit during the summer time. Everything turned out well. I had no issues with my air conditioning over the summer and stayed nice and cool. I have moved to a new house and haven't had a need for A/C Doctors, but I have already recommended them to others and would recommend them at any time!