12 year old system. Customer stated upon arrival that system is cooling, but during process of selling home buyers have complaints of age/poor condition of system. Coil grates, electrical terminals, condenser coils, evaporator coils, and line-set entering condenser are all extremely rusted and/or corroded. Potential for refrigerant leaks are high. Capacitor is weak as well. Handed over to field supervisor to provide a solution.