I called on a saturday morning in july when my air stopped blowing cold the night before, after speaking with Tom over the phone with particulars of my problem, he said would be able to come by sometime this morning. About an hour later he was here looking for the problem. He could of said my unit was dead, or a line was cracked or any tech jargon that would sound bad. But instead he honestly and quickly found the fan breaker had gone bad. He replaced it in minutes, checked out my freon which was low by 2 lbs and replaced that, put a new cap on the freon to help keep it in and charged a very, very resonable rate for the replacement. Based on this one experience I would highly recommend Tom and Advanced Air to anyone with a simular problem.