An HVAC chiller compressor overhauling technician is responsible for the maintenance, troubleshooting, and repair of large-scale HVAC chiller systems, with a focus on compressor overhauls. This involves diagnosing issues, disassembling and reassembling compressors, replacing worn parts, and ensuring proper functionality of the entire refrigeration circuit. The role requires strong technical skills, including electrical, mechanical, and refrigeration knowledge, as well as the ability to work with precision measuring tools and follow manufacturer specifications.