Support HVAC equipment including, but not limited to, air- and water-cooled reciprocating chillers, centrifugal and screw package chillers, natural gas boilers and unit heaters, electric duct heaters, cooling towers, water pumps, AHUs, FCUs, fans, and air distribution systems. This role oversees the safe, efficient, and high-quality installation, service, maintenance, troubleshooting, and operation of HVAC systems supporting critical facilities and data center environments.