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Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Install or repair heating, central air conditioning, HVAC, or refrigeration systems, including oil burners, hot-air furnaces, and heating stoves.

Tasks
30 tasks27 core, 1 supplemental, 2 not rated
Family
Installation, Maintenance & RepairOne of its 52 occupations
Code
49-9021.00SOC 2018: 49-9021

Read the 30 tasks Download this record as JSON

What the work is made of

27 core tasks, 1 supplemental and 2 not rated, each quoted as published, with where it came from.

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Core: central to the jobSupplemental: done by some, not allNot rated: O*NET has not rated it core or supplemental

  1. Task 1. Test electrical circuits or components for continuity, using electrical test equipment.Core taskTask 23552Rated by 56 people who do the job, August 2022
  2. Task 2. Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.Core taskTask 23557Rated by 52 people who do the job, August 2022
  3. Task 3. 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.Core taskTask 23558Rated by 52 people who do the job, August 2022
  4. Task 4. Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.Core taskTask 23554Rated by 52 people who do the job, August 2022
  5. Task 5. Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.Core taskTask 23555Rated by 51 people who do the job, August 2022
  6. Task 6. Adjust system controls to settings recommended by manufacturer to balance system.Core taskTask 23565Rated by 56 people who do the job, August 2022
  7. Task 7. Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.Core taskTask 23568Rated by 55 people who do the job, August 2022
  8. Task 8. Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.Core taskTask 23562Rated by 52 people who do the job, August 2022
  9. Task 9. Repair or replace defective equipment, components, or wiring.Core taskTask 23553Rated by 54 people who do the job, August 2022
  10. Task 10. 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.Core taskTask 23579Rated by 51 people who do the job, August 2022
  11. Task 11. Install, connect, or adjust thermostats, humidistats, or timers.Core taskTask 23556Rated by 55 people who do the job, August 2022
  12. Task 12. Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers.Core taskTask 23559Rated by 55 people who do the job, August 2022
  13. Task 13. Braze or solder parts to repair defective joints and leaks.Core taskTask 23560Rated by 55 people who do the job, August 2022
  14. Task 14. Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools.Core taskTask 23561Rated by 51 people who do the job, August 2022
  15. Task 15. Perform mechanical overhauls and refrigerant reclaiming.Core taskTask 23564Rated by 55 people who do the job, August 2022
  16. Task 16. Install expansion and control valves, using acetylene torches and wrenches.Core taskTask 23566Rated by 55 people who do the job, August 2022
  17. Task 17. Measure, cut, thread, or bend pipe or tubing, using pipe fitter's tools.Core taskTask 23571Rated by 56 people who do the job, August 2022
  18. Task 18. Mount compressor, condenser, and other components in specified locations on frames, using hand tools and acetylene welding equipment.Core taskTask 23570Rated by 55 people who do the job, August 2022
  19. Task 19. Install dehumidifiers or related equipment for spaces that require cool, dry air to operate efficiently, such as computer rooms.Core taskTask 23567Rated by 51 people who do the job, August 2022
  20. Task 20. Record and report time, materials, faults, deficiencies, or other unusual occurrences on work orders.Core taskTask 23563Rated by 56 people who do the job, August 2022
  21. Task 21. Keep records of repairs and replacements made and causes of malfunctions.Core taskTask 23572Rated by 55 people who do the job, August 2022
  22. Task 22. Cut or drill holes in floors, walls, or roof to install equipment, using power saws or drills.Core taskTask 23569Rated by 54 people who do the job, August 2022
  23. Task 23. Estimate, order, pick up, deliver, and install materials and supplies needed to maintain equipment in good working condition.Core taskTask 23574Rated by 55 people who do the job, August 2022
  24. Task 24. Schedule work with customers and initiate work orders, house requisitions, and orders from stock.Core taskTask 23575Rated by 55 people who do the job, August 2022
  25. Task 25. Supervise and instruct assistants.Core taskTask 23576Rated by 55 people who do the job, August 2022
  26. Task 26. Lay out reference points for installation of structural and functional components, using measuring instruments.Core taskTask 23577Rated by 55 people who do the job, August 2022
  27. Task 27. Lift and align components into position, using hoist or block and tackle.Core taskTask 23578Rated by 55 people who do the job, August 2022
  28. Task 28. Install or repair air purification systems, such as specialized filters or ultraviolet (UV) light purification systems.Supplemental taskTask 23573Rated by 53 people who do the job, August 2022
  29. Task 29. Repair or service heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, and refilling non-toxic refrigerants.Not ratedTask 23580Listed by O*NET analysts, November 2020
  30. Task 30. Test pipes, lines, components, and connections for leaks.Not ratedTask 23581Listed by O*NET analysts, November 2020

Where this comes from

Quoted from the U.S. Department of Labor, and credited. Nothing on this page is written by us.

How we copy and credit sources
  1. Published by
    O*NET 29.0, U.S. Department of LaborEmployment and Training Administration
  2. Classification
    Standard Occupational Classification 2018, 49-9021
  3. License
    CC BY 4.0Free to copy and reuse, with credit
  4. Changed by us
    Nothing.

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