Troubleshoots, installs, services, and repairs environmental control systems in residences, department stores, and office buildings. Mounts compressor and condenser units on platform or floor using hand tools, while following blueprints or engineering specifications. Fabricates, assembles, and installs ductwork and chassis parts using portable metalworking tools and welding equipment. Installs evaporator unit in chassis or in air duct system using hand tools. Cuts and bends tubing to correct length and shape using cutting and bending equipment and tools. Cuts and threads pipe using machine-threading or hand-threading equipment. Joins tubing or pipes to various refrigerating units by means of sleeves, couplings, or unions, and solders joints using torch to form complete circuit for refrigerant. Installs expansion and discharge valves in circuit. Connects motors, compressors, temperature controls, humidity controls, and circulating ventilation fans to control panels and connects control panels to power source. Installs air and water filters in completed installation. Injects small amount of refrigerant into compressor to test systems and adds refrigerant to build up prescribed operating pressure. Observes pressure and vacuum gauges and adjusts controls to insure proper operation. Tests joints and connections for gas leaks using gauges or soap-and-water solution. Wraps pipes in insulation batting and secures them in place with cement or wire bands. Replaces defective breaker controls, thermostats, switches, fuses, and electrical wiring to repair installed units using electrician's hand tools and test equipment. Tests boilers and cooling tower for proper water chemistry and adjusts chemical treatments as needed. Performs other duties as required.Education: High school diploma or GED; completion of HVAC apprenticeship
Experience: 4-year journeyman or 2-year technical experience
Training: CFC and HFC certification for universal type refrigerants
Skill Requirements: Skilled in the use of hand and power tools common to the trade. Ability to interpret and apply codes, blueprints, wiring diagrams, and engineering drawings. Knowledge of operation/installation of a variety of complete HVAC systems/equipment. Strong HVAC diagnostic and troubleshooting abilities.