A professional who installs and repairs automotive air-conditioning units. Respnsibilities include:

• Bolts compressor to engine block and installs driving pulley on front end of crankshaft.
• Places fan belt on pulleys, adjusts tension, and tightens bolts.
• Bolts evaporator unit under dashboard or in trunk.
• Welds or bolts mounting brackets to automobile frame.
• Drills holes through interior panels, threads hoses through holes and connects hoses to compressor, evaporator, and cool-air outlet.
• Fills compressor with refrigerant and starts unit.
• Measures compressor pressure to determine efficiency of compressor, using gauge.
• Listens to operating unit for indications of malfunction.
• Removes faulty units from vehicles, disassembles them, and replaces worn and broken parts and fluid in unit.
• Makes electrical connections as required.
• May specialize in installation of automotive air-conditioning units and be designated Automotive Air-Conditioner Installer.