Performed an AC cool check. Checked the electrical, mechanical, safety, and performance of the system. I cleared the condensation drain line and flow tested the drain with two gallons of water. I also treated the drain line. The air filter was replaced with a customer supplied filter. The contactor on the condenser unit is burnt and pitted. Options for repair were presented to the homeowners and they chose to have the contactor replaced. I replaced the contactor and function tested the system. The system was running at the completion of service. No other major issues found