Performed preventative maintenance for a Trane ac system. Serial #21457SF75F model #T4TTR6030J1000A. Upon arrival the system was calling for heat. I ended the call for heat and let the system rest while I inspected the internal components. The evaporator coil’s are clean and in good condition. Tested the drain pan, drain line and condensate pump with several bottles of water. I inspected all electrical connections to ensure that they are secure and in good condition. The homeowner replaces his own air filter size 16x25x4. The condenser coil’s are clean and in good condition. The condenser amp draws are .43 for the fan and 6.7 for the compressor. There is a 19° temperature split for the system. The system is operating properly at this time. No charge FWI.