# Tasks & work activities — refrigeration air condition and heat pump technician

Source: O*NET 30.3, occupation 49-9021.00 (Heating, Air Conditioning, and Refrigeration Mechanics and Installers).

## Task statements

- **[Core]** Test electrical circuits or components for continuity, using electrical test equipment.
- **[Core]** Repair or replace defective equipment, components, or wiring.
- **[Core]** Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.
- **[Core]** Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.
- **[Core]** Install, connect, or adjust thermostats, humidistats, or timers.
- **[Core]** Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.
- **[Core]** 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]** Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers.
- **[Core]** Braze or solder parts to repair defective joints and leaks.
- **[Core]** Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools.
- **[Core]** Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.
- **[Core]** Record and report time, materials, faults, deficiencies, or other unusual occurrences on work orders.
- **[Core]** Perform mechanical overhauls and refrigerant reclaiming.
- **[Core]** Adjust system controls to settings recommended by manufacturer to balance system.
- **[Core]** Install expansion and control valves, using acetylene torches and wrenches.
- **[Core]** Install dehumidifiers or related equipment for spaces that require cool, dry air to operate efficiently, such as computer rooms.
- **[Core]** Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.
- **[Core]** Cut or drill holes in floors, walls, or roof to install equipment, using power saws or drills.
- **[Core]** Mount compressor, condenser, and other components in specified locations on frames, using hand tools and acetylene welding equipment.
- **[Core]** Measure, cut, thread, or bend pipe or tubing, using pipe fitter's tools.
- **[Core]** Keep records of repairs and replacements made and causes of malfunctions.
- **[Core]** Estimate, order, pick up, deliver, and install materials and supplies needed to maintain equipment in good working condition.
- **[Core]** Schedule work with customers and initiate work orders, house requisitions, and orders from stock.
- **[Core]** Supervise and instruct assistants.
- **[Core]** Lay out reference points for installation of structural and functional components, using measuring instruments.
- **[Core]** Lift and align components into position, using hoist or block and tackle.
- **[Core]** 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.
- **[Supplemental]** Install or repair air purification systems, such as specialized filters or ultraviolet (UV) light purification systems.
- **[nan]** 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.
- **[nan]** Test pipes, lines, components, and connections for leaks.

## Detailed work activities

- Adjust equipment to ensure optimal performance.
- Advise others on issues related to repairs, installation, or equipment design.
- Braze metal parts or components.
- Confer with customers or users to assess problems.
- Connect electrical components or equipment.
- Cut materials according to specifications or needs.
- Determine operational compliance with regulations or standards.
- Document operational activities.
- Drill holes in parts, equipment, or materials.
- Inspect systems to determine if they are operating properly.
- Install energy-efficient heating, ventilation, or air conditioning (HVAC) equipment.
- Install heating, ventilation, or air conditioning (HVAC) equipment.
- Install home appliances.
- Install machine or equipment replacement parts.
- Interpret blueprints, specifications, or diagrams to inform installation, development or operation activities.
- Lay out work according to specifications.
- Maintain repair or maintenance records.
- Measure distances or dimensions.
- Operate cranes, hoists, or other moving or lifting equipment.
- Order materials, supplies, or equipment.
- Repair worn, damaged, or defective mechanical parts.
- Replace worn, damaged, or defective mechanical parts.
- Schedule repair, installation or maintenance activities.
- Service heating, ventilation or air-conditioning (HVAC) systems or components.
- Supervise employees.
- Test electrical circuits or components for proper functioning.
- Test mechanical systems to ensure proper functioning.
- Train others in operational procedures.
- Travel to work sites to perform installation, repair or maintenance work.