Responsibilities: • Under limited supervision, the employee assists with installation, modification, maintenance, and repair work on University HVAC systems and equipment to include: • Locating causes of failure or malfunction by observation and testing of mechanical, electrical, pneumatic components, and application-specific computer programs; • Maintains cooling towers, hot water and chilled water piping and controls, direct expansion systems, fans and blowers, starters, pneumatic and electrical controls, condensate drains, domestic and commercial refrigeration, walk-in coolers and freezers, water fountains, and ice machines; • Installs new motors, pumps, compressors, and other parts as necessary; • Cleans, repairs, replaces, and/or adjusts pneumatic, electric, and motor controls, and related safety devices; • Make initial settings and final adjustments of refrigeration and heating, and air conditioning systems; • Modify existing installations to obtain the required results; • Repairs or replaces other functional components of HVAC equipment or systems as necessary; • Carries out designated preventive maintenance and seasonal start-up and shut-down procedures; • Analyzes HVAC systems and controls to determine problems and initiates repairs as directed by the supervisor; • Drives a vehicle to and from locations and keeps the vehicle supplied with tools and materials, and keeps it maintained and in an orderly, clean condition; • Performs miscellaneous duties such as cleaning and painting the equipment and mechanical areas; • Picks up materials from suppliers when requested; • Inspects areas and reports problems to the supervisor; • Maintains paperwork and electronic communications, including work orders, and recording time; • Orders and includes materials on work orders in an expedient manner; • Follows established university and departmental policies and procedures; • Follows established safety procedures and reports accidents and problems to supervisor promptly; • Performs assigned progressive on-the-job training tasks to develop skills in the HVAC trade. Required Qualifications: High school diploma or equivalent; Demonstrated experience (generally 5+ years) with the HVAC trade; Demonstrated knowledge of the equipment, materials, methods, practices, and tools used in the HVAC trade; Knowledge of the common hazards and necessary safety precautions; Knowledge of local, state, and national mechanical codes; Ability to use necessary hand and power tools and testing equipment; Ability to analyze HVAC systems and controls to determine problems and initiate repairs as directed by supervisor; EPA-approved universal refrigerant recovery type I, II, & III CFC licenses required; Valid drivers license needed to drive GMU state vehicles; must currently possess an appropriate, active, valid motor vehicle operator's license that meets all of GMU's requirements for operating state vehicles and equipment under Mason's Vehicle Use Policy 1411 https://universitypolicy.gmu.edu/policies/vehicle-use/.