This position provides skilled heating, refrigeration, and air conditioning trouble shooting, repairs and new installation services. Perform tasks to include maintaining all heating, ventilation, refrigeration and air conditioning systems; to include chilled water, heating hot water, electrical and refrigeration component repair and replacement, filter replacement, inspections, lubrication, operational adjustments, belt tensioning, and bearing replacement. Installation and modification of system equipment and components, supply and return ducts, building indoor air quality and pressurization, and building computer automation system. Energy Management System repair facilitators, and back-up for Central Plant Operators.