Heating and Air Conditioning Mechanics and Installers

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