Performed preventative maintenance tune up. Checked blower motor operation and inspected equipment cabinet. Checked safety float switch and inspected drain line. Cleaned vacuumed drain pan and drain line. Flushed drain line with water and primed drain line. Checked thermostat calibration and filter location. Customer has replaced filter. Checked electrical wiring and inspected cabinet condition. The evaporator coil is dirty and needs to be cleaned to help unit breathe properly. Checked rooftop condenser unit and electrical disconnect. Checked electrical wiring and inspected electrical components. Test the capacitor and the capacitor is weak. Recommend to capacitor replacement on condenser unit. Checked refrigerant levels and check test start up components. Unit is struggling to start up due to weak capacitor. Refrigerant pressure is good working properly. Due to aged equipment and failure on components. It may be time to speak with comfort advisor on upgrading the system to ener