The three technicians completed the job in one day with commissioning a couple days later. (It was too cold in the evening to load the A/C) As a professional tradesman myself I appreciated their attention to detail and pride in their workmanship. Even though it was late when they finished they weren't rushed. My basement was spotless when they left and the York units now work perfectly. As an aside they also corrected black pipe venting on my hot water heater and de-pressurized ducts the previous installer had installed for me in the price.