Came out to call to perform preventative maintenance on AC system. Discussed with customer about maintenance being provided today, filter needing changed and any issues. Customer stated system has been working fine. I changed the filter for customer. Inspected the internals of the air handler, made sure evaporator coil is clean and checked systems operations. Washed condenser coil thoroughly. Checked capacitor, contactor, fan motor, compressor and overall condition of equipment. Cycled ac on and checked amps, temperatures and pressures. System is cooling within proper ranges at this time.