Completed one system maintenance. Found indoor system with clean blower and good electrical components. Evap coil is rusted with corrosion around connections indicating possible leak in near future. Pressures are good at the moment. Left algae tablets in condensate pump. Installed inline float switch. Changed filter. Outdoor unit has failing capacitor and pitted contactor. Replaced both. Compressor and fan have good amperage. System cooling at this time.