My air conditioning system wasn't working well--it would work until the hottest part of the day and then it would stop. I called Air Current Inc. The technician came out promptly. After looking at the system, he thought it was a sticky relay in the circuit board that would stop working when the unit heated up. He ordered two parts for the system. The parts haven't come in yet, but he found a work-around and we have air right now. Air Current Inc installed the original system eight years ago. I rate Air Current, Inc., Number One!