AAA HVAC came to my home to determine what caused my AC to stop working after 2 other companies declined to make an accurate diagnosis and repair. Sean and Alex showed up and immediately dived into the problem. After about an hour, they knew the problem and that it would require replacement. They ordered the new unit, and within a week they were back to install it. Removing my old unit from 1984 (yes, 1984), took a lot of time and effort. They were able to remove it without damaging the door jams or scratching the walls. The new unit went in much easier, but the ducts had to change. They ordered new ducts, and about 3 days later they were back to install them. In all, Sean and Alex spent well over 20 billable hours completing this job. The entire time, they were not satisfied with leaving anything incomplete and took the time to make sure I was comfortable with what they were doing. They were very courteous and professional at all times.