Write down a list of material and supplies needed for installation purposes and either purchases them or ask customers to buy them, depending on the contract

•  Install air conditioners in houses and commercial buildings by following standard installation protocols
•  Test installed air conditioners to ensure that they are in proper working condition
•  Repair air conditioning units by performing analysis and troubleshooting activities
•  Perform maintenance activities such as cleaning AC grills and filters on installed air conditioning systems
•  Calibrate systems.
•  Perform preventive maintenance and routine servicing of equipment.
•  Diagnose defects, and install, repair and maintain heating, ventilating, refrigeration and air-conditioning units.
•  Follow oral and written instructions.
•  Operate specialized machinery, equipment and tools utilized in the repair, installation and maintenance of heating, ventilation, air conditioning and refrigeration systems