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What do Heating and Air Conditioning Mechanics and Installers do?

Install, service, or repair heating and air conditioning systems in residences or commercial establishments.

What are the Main Tasks of Heating and Air Conditioning Mechanics and Installers?

  • Test electrical circuits or components for continuity, using electrical test equipment.
  • Test pipe or tubing joints or connections for leaks, using pressure gauge or soap-and-water solution.
  • Join pipes or tubing to equipment and to fuel, water, or refrigerant source, to form complete circuit.
  • Reassemble and test equipment following repairs.
  • Repair or replace defective equipment, components, or wiring.
  • Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools.
  • Obtain and maintain required certifications.
  • Install, connect, and adjust thermostats, humidistats and timers, using hand tools.
  • Comply with all applicable standards, policies, and procedures, including safety procedures and the maintenance of a clean work area.
  • Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.
  • Adjust system controls to setting recommended by manufacturer to balance system, using hand tools.
  • Install auxiliary components to heating-cooling equipment, such as expansion and discharge valves, air ducts, pipes, blowers, dampers, flues and stokers, following blueprints.
  • Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.
  • Cut or drill holes in floors, walls, or roof to install equipment, using power saws or drills.
  • Assemble, position and mount heating or cooling equipment, following blueprints.
  • Record and report all faults, deficiencies, and other unusual occurrences, as well as the time and materials expended on work orders.
  • Discuss heating-cooling system malfunctions with users to isolate problems or to verify that malfunctions have been corrected.
  • Study blueprints, design specifications, and manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components.
  • Measure, cut, thread, or bend pipe or tubing, using pipe fitter's tools.
  • Fabricate, assemble, or install duct work or chassis parts, using portable metal-working tools or welding equipment.
  • Generate work orders that address deficiencies in need of correction.
  • Assist with other work in coordination with repair and maintenance teams.
  • Wrap pipes in insulation, securing it in place with cement or wire bands.
  • Install and test automatic, programmable, or wireless thermostats in residential or commercial buildings to minimize energy usage for heating or cooling.
  • Install dehumidifiers or related equipment for spaces that require cool, dry air to operate efficiently, such as computer rooms.
  • Install magnetic-centrifugal chillers, compressors, or related equipment to cool air temperatures through the use of recirculating water.
  • Install or repair air purification systems, such as specialized filters or ultraviolet (UV) light purification systems.
  • 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 radiator controls for room-level zone control heating of residential or commercial buildings.
  • Repair or service heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, or refilling non-toxic refrigerants.
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