CBRE Government & Defense - - Responsibilities: Installs, services and repairs environmental-control systems; utilizing knowledge of refrigeration theory, pipefitting and structural layout.; Mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications.; Fabricates, assembles and installs ductwork and chassis parts, using portable metalworking tools and welding equipment.; Tests joints and connections for gas leaks, using gauges or soap and water solution.; Replaces defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed units, using electricians hand tools and test equipment.