Responsibilities: Perform maintenance and repair on mechanical systems including air-cooled chillers, centrifugal chillers, pumps, cooling towers, air-handling units (AHUs), valves, fan-coil units, variable air volume (VAV) systems, and related equipment. Nature and Variety of Work: The HVAC & Chiller Mechanic is responsible for the maintenance, diagnosis, repair, and optimization of commercial mechanical and HVAC systems, with a primary focus on chillers and related equipment.