Know and apply the operating principles, purpose, proper application and design limitations of electrical, electronic, and pneumatic controls, and mechanical appliances such as chillers, compressors, cooling towers, pumps, flow meters, fans, thermostats, humidistats, heat exchangers, and recorders. Here, you will make an impact by: Responsible for installing, modifying, moving, troubleshooting, repairing, decommissioning and disposal, calibrating, and making adjustments to heating, ventilating, air conditioning, refrigeration, and climate control systems used in production, laboratory, office and utility areas.