We advise clients on different refrigeration/air-conditioning systems. Consult with clients and refrigeration/air-conditioning design engineers about system installation. Assemble and install pipe work for refrigeration/air-conditioning systems. Install or oversee the installation of refrigeration/air-conditioning systems. Check existing refrigeration/air-conditioning systems for leaks and faults. Repair and maintain refrigeration/air-conditioning systems. Test and balance systems once they are installed.