Heating and Air Conditioning Mechanics and Installers

• Test electrical circuits or components for continuity, using electrical test equipment.
• Repair or replace defective equipment, components, or wiring.
• Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.
• 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.
• Install, connect, or adjust thermostats, humidistats, or timers.
• Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.
• 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.
• Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.
• Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers.
• Record and report time, materials, faults, deficiencies, or other unusual occurrences on work orders.
• Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.
• Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools.
• Install and test automatic, programmable, or wireless thermostats in residential or commercial buildings to minimize energy usage for heating or cooling.
• Adjust system controls to settings recommended by manufacturer to balance system.
• Install dehumidifiers or related equipment for spaces that require cool, dry air to operate efficiently, such as computer rooms.
• Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.
• Install magnetic-centrifugal chillers, compressors, or related equipment to cool air temperatures through the use of recirculating water.
• Cut or drill holes in floors, walls, or roof to install equipment, using power saws or drills.
• Measure, cut, thread, or bend pipe or tubing, using pipe fitter's tools.
• Install or repair air purification systems, such as specialized filters or ultraviolet (UV) light purification systems.
• Assemble, position, and mount heating or cooling equipment, following blueprints or manufacturer's specifications.
• Fabricate, assemble, or install duct work or chassis parts, using portable metal-working tools or welding equipment.
• Install radiator controls for room-level zone control heating of residential or commercial buildings.

Source: O*NET OnLine information for Heating and Air Conditioning Mechanics and Installers.

• Equipment Maintenance - Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.
• Installation - Installing equipment, machines, wiring, or programs to meet specifications.
• Troubleshooting - Determining causes of operating errors and deciding what to do about it.
• Operation Monitoring - Watching gauges, dials, or other indicators to make sure a machine is working properly.
• Repairing - Repairing machines or systems using the needed tools.
• Active Listening - Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.
• Operation and Control - Controlling operations of equipment or systems.
• Critical Thinking - Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.
• Reading Comprehension - Understanding written sentences and paragraphs in work related documents.

Source: O*NET OnLine information for Heating and Air Conditioning Mechanics and Installers.