Called for their advertised special. I had an existing problem of outside unit buzzing when running so I knew something needed fixing or replacing as well. Jay, the service tech, dida very thorough job cleaning and inspecting the outside unit and replacing the bad part. Flushed the drain line and inspected the air Handler and evaporator. Treated the drain pan with chemical tablets to keep crud from developing. Worked for over an hour. Did a great job. Gave me estimates on a new unit since current one is 16 years old. No high pressure sales.