I had a completely new air split system installed by Air Concepts. They had to move it to a new location, complete new ductwork, re-piped drainage, new wiring along with new attic insulation. The bid included fixing energy leaks (doors, fireplace windows etc.). Workers were on time, professional, courteous. I use oxygen and they provided a window unit while work was being completed/ above and beyond since our air was out for a week before work could start. Berkeley electric did energy audit before/after which showed a 50%+ improvement and BEC representative said was the most improvement he had ever seen. I highly recommend Air concept for any air conditioning work . You may find their equal by you will not find their better Pierre L Goose Creek SC