Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Heating, Air Conditioning, and Refrigeration Mechanics and Installers typically perform the following tasks: • Test electrical circuits or components for continuity, using electrical test equipment. • Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area. • Study blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components. • Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions. • Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit. • Adjust system controls to settings recommended by manufacturer to balance system. • Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters. • Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions. • Repair or replace defective equipment, components, or wiring. • Install or repair self-contained ground source heat pumps or hybrid ground or air source heat pumps to minimize carbon-based energy consumption and reduce carbon emissions. • Install, connect, or adjust thermostats, humidistats, or timers. • Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers. • Braze or solder parts to repair defective joints and leaks. • Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools. • Perform mechanical overhauls and refrigerant reclaiming. • Install expansion and control valves, using acetylene torches and wrenches. • Measure, cut, thread, or bend pipe or tubing, using pipe fitter's tools. • Mount compressor, condenser, and other components in specified locations on frames, using hand tools and acetylene welding equipment. • Install dehumidifiers or related equipment for spaces that require cool, dry air to operate efficiently, such as computer rooms. • Record and report time, materials, faults, deficiencies, or other unusual occurrences on work orders.