Brandon, the technician arrived withing the scheduled time, was very cheerful and after first discussing the problem with him (had an electrical short on our roof-top Trane Heat Pump), was quickly up on the roof diagnosing the problems. He found a burnt relay and a wire shorting to a copper coolant line, and quickly solved both problems within one and a half hours. The cost of repair was very reasonable and saved another $35 using the Angies list repair coupon. My present HVAC company sent 5 tech's on 4 appointments and couldn't solve the problem ! Brandon did it in 1 ! Great job Brandon, we're switching to Schiller H&C !