Our Air Conditioning unit was shutting down wilhile the fans inside were still blowing air. Pro-Tech came out and found a very old and pitted conduit and replaced it and the price was great! The next day everything ran smoothly, but the second day the unit shut off again while the fans inside continued to run. Pro-Tech came back out that day and found the cause of the shut off, due to a condensation/water sensor installed on our furnace. Initial problem has been solved and now the unit runs perfectly! Thanks Pro-tech!!!