We purchased a new AC unit just over two years ago. The install was great and the unit itself has been wonderful. My reason for not giving them a perfect rating is the follow up service and communication. My latest service appointment was cancelled right before they should have arrived. The reason was that they had too many appointments for failed units. I'm sorry...but we had an appointment so this should have been priority. I would never do this to a customer. Part of my purchase agreement included twice a year service. This is two in a row that will be missed now. In the future I will go with a company that stands by their service appointments. I'm sure that if my appointment was to buy another unit it wouldn't have been cancelled.