Ac clean and tune. Checked indoor coil with refrigerant sniffer. Found indications of a leak on the coil. Checked and cleaned electrical compartment. Compressor and fan motor tested ok. Contactor is ok. Capacitor is original and worn. Used coil cleaner on condenser coil. Hooked up gauges and checked pressures and temps. Indoor coil temp was 41, subcooling was 10, super heat was 9, indoor split was 18. Average life expectancy for this unit is 14 years. This system is 14 years old and worn. Cooling properly at this time. Job complete.