Heating, Ventilation, Air-Conditioning, and Refrigeration Technology is a postsecondary instructional program that prepares individuals to work in engineering departments or private firms installing, maintaining, and operating small or medium air-conditioning, heating, and refrigeration systems. Instruction prepares individuals to work in a commercial setting performing special tasks relating to designing ductwork, assembly, installation, servicing, operation, and maintenance of Heating, Refrigeration, and Air-Conditioning Engineers, Inc., Air-Conditioning Contractors of America (ACCA), Air-Conditioning Heating Refrigeration Institute (AHRI), and others. Included are air-conditioning, heating, and refrigeration devices; equipment, techniques, and systems; and maintenance and operation of these systems.