Robert was one of the most knowledgable and pleasant technicians we have had yet. He took his time to explain what was going wrong with our system and looked at all possibilities before coming to a solution. It is unfortunate that this is the 10th visit in under two years we have had for our AC unit. Robert made me feel like the company cares. I definitely give Robert 5 stars! Wish I could have requested him for all the previous work orders. Robert gets an "A" for awesome whereas the AC unit gets a "D" for disappointed.