The HVAC Mechanic I performs skilled installation, maintenance, and repair of heating, ventilation, air conditioning, and refrigeration systems in City facilities. This role follows safety standards while supporting senior technicians through preventive maintenance, troubleshooting, and documentation. Key responsibilities include servicing HVAC systems, such as air handlers, chillers, and ductwork, as well as replacing filters and cleaning coils. The mechanic assists in estimating labor and materials, maintains tools and inventory, and ensures compliance with relevant codes. The position requires a commitment to learning, using building automation systems, and interpreting blueprints for diagnostics and repairs, all crucial for maintaining comfort and efficiency in facilities. This position reports to an assigned supervisor.