Replaced the air conditioning and heating system in a residential home. applied for a permit, ordered the necessary equipment, and scheduled the installation. Removed the old system, reinforced the air handler deck, and installed a new filter rack, air handler, heater, float switch, surge protector, heat pump condenser, RGF REME with sail switch, and thermostat. Tied the new air handler to the existing ductwork. Purged the lines with nitrogen during the brazing process, pressure tested the lines, and made new copper joints. Evacuated the system and opened the isolation valves. Started the system and checked its operation. It was operating according to the manufacture's specifications.