Chiller plant technicians manage central cooling plants used in large buildings, industrial complexes, and district cooling systems. They oversee chiller performance, check refrigerant and water flow parameters, maintain pumps and heat exchangers, and diagnose electrical or mechanical issues. Their role requires understanding of thermodynamics, automation systems, and energy optimization strategies. With increasing adoption of district cooling and large-scale HVAC systems, the demand for skilled chiller technicians is rising worldwide. Accurate monitoring, safe handling of refrigerants, and preventive maintenance practices are essential to avoid costly breakdowns. They often collaborate with HVAC engineers and facility managers to ensure continuous and energy-efficient operations.