Courtney T was very professional diagnosing our A/C unit's failure to start up. It appeared to be as simple as a loose wire, which he immediately remedied, but when measuring the differential pressure to charge up the system with coolant, discovered that it was more serious than that when it would not pressure up. Courtney was thorough in checking out the remainder of time left on the warranty, but discovered it was no longer in effect on the 9 year old unit. The repair cost estimate wound up being being 50% that of a new heat pump/AC unit so we opted for the replacement. Courtney was totally familiar with the HVAC equipment and offered 3 options to fit our financial circumstances. He then promptly arranged for next day installation.