HVAC Apprenticeship (ABC)

Heating, air conditioning and refrigeration systems consist of many mechanical, electrical and electronic components, including motors, compressors, pumps, fans, ducts, pipes, thermostats and switches. In central heating systems, a furnace heats air that is distributed throughout the building by a system of metal or fiberglass ducts. Technicians must be able to maintain, diagnose and correct problems throughout the entire system. They may adjust system controls to recommended settings and test the performance of the entire system using special tools and test equipment. The work involves installing ductwork, and installing and wiring environmental control systems.