Refrigeration and Air Conditioning Mechanics install, maintain and service residential, commercial, industrial and institutional heating, ventilation, air conditioning and refrigeration units and systems. They connect to air delivery systems, install and service hydronic and secondary refrigerant systems and associated controls. Their duties include laying out reference points for installation, assembling and installing components, installing wiring to connect components to an electric power supply, and calibrating related controls.
They measure, cut, bend, thread and connect pipe to functional components and utilities. They also maintain and service systems by inspecting and testing components, brazing and soldering parts to repair defective joints, adjusting and replacing worn or defective components and reassembling repaired components and systems. As part of service and commissioning, Refrigeration and Air Conditioning Mechanics start-up, test, charge, adjust, calibrate, balance, measure, verify, maintain and document systems.