The technician performs advanced troubleshooting, repair, and preventive maintenance on a wide range of HVAC and refrigeration equipment, including ice machines, refrigerators/freezers, low-temperature systems, environmental chambers, incubators, freeze dryers, air dryers, dehumidifiers, stability chambers, and building HVAC systems. The HVAC/Refrigeration Technician II provides 24/7 skilled-trade maintenance support across Abbott Park and associated owned or leased Lake County facilities, including manufacturing, R&D laboratories, warehouses, and offices.