Pkg clean and tune. Customer upgrade to pkg clean and tune. Cycled furnace. Checked heat exchanger, ok. Removed, checked, and cleaned burners and flame sensor. Both ok. Checked and adjusted gas pressures to maximize efficiency. Checked wires and tighter clamps. Cleared drain line. Normal levels of XS air and CO found in exhaust. No CO found in airstream. System operating normal at this time. Ac clean and tune. Cycled system. Checked and cleaned electrical compartment. Normal tests of capacitor and compressor. Contactor operating normal. Used coil cleaner on condenser coil. Hooked up gauges and checked pressures and temps. Subcooling was 11, indoor coil temp was 40, indoor cooling was 17. Both systems operating normal at this time. Job complete.