HVAC Technician G119 Facilities Maintenance

This position is responsible for performing HVAC repair and maintenance on city-owned facilities.

• Installs, repairs, maintains, and replaces commercial HVAC and refrigeration equipment including:

• Split systems
• Package units
• Heat pumps
• RTUs (Roof Top Units)
• Air handlers
• Chillers
• Cooling towers
• Boilers
• Variable Refrigerant Flow (VRF) systems
• Variable Air Volume (VAV) systems
• Exhaust and supply fans
• Make-up air units

• Troubleshoots electrical, mechanical, refrigeration, pneumatic, and electronic control systems.
• Installs and repairs refrigerant piping, condensate drains, ductwork, dampers, thermostats, and related HVAC components.
• Performs preventive maintenance including:

• Filter replacement
• Belt replacement and alignment
• Lubrication
• Coil cleaning
• Drain cleaning
• Refrigerant checks
• Motor inspections
• Electrical inspections
• System performance testing

• Diagnoses compressor failures, refrigerant leaks, airflow problems, electrical failures, and control issues.
• Repairs and replaces compressors, motors, bearings, blower assemblies, expansion valves, contractors, capacitors, relays, sensors, and other HVAC components.
• Recovers, evacuates, charges, and handles refrigerants in accordance with EPA regulations.
• Performs leak detection and pressure testing of refrigeration systems.
• Installs and services digital controls and building automation systems (BAS/BMS).
• Reads and interprets blueprints, wiring diagrams, specifications, and technical manuals.
• Operates recovery machines, vacuum pumps, combustion analyzers, refrigerant gauges, multimeters, megohm meters, and other diagnostic equipment.
• Coordinates with contractors and vendors during major repairs and capital improvement projects.
• Documents repairs, labor, materials, and preventive maintenance activities using the City's computerized maintenance management system (CMMS).
• Maintains inventory of HVAC parts and recommends replacement equipment when systems become unreliable or beyond economical repair.
• Responds to emergency HVAC failures after normal business hours as assigned.
• Maintains compliance with OSHA, EPA, NFPA, International Mechanical Code, and applicable building codes.
• Assists other Facilities Maintenance trades as needed.
• Performs other related duties as assigned.

Knowledge of:

• Commercial HVAC and refrigeration systems
• Electrical troubleshooting up to 480 volts
• Refrigeration cycle theory
• Commercial boilers and chillers
• Pneumatic and electronic controls
• Building Automation Systems (BAS)
• Variable Frequency Drives (VFDs)
• Mechanical and electrical blueprints
• Preventive maintenance practices
• EPA refrigerant handling requirements
• OSHA safety regulations
• Mechanical, plumbing, and electrical codes

Skill in:

• Diagnosing complex HVAC system failures
• Brazing, soldering, and refrigerant piping installation
• Electrical troubleshooting
• Using HVAC diagnostic instruments
• Reading schematics and technical manuals
• Time management and prioritization
• Written and verbal communication
• Customer service

Ability to:

• Work independently with minimal supervision.
• Lift and carry equipment weighing up to 75 pounds.
• Work from ladders, scaffolds, aerial lifts, and rooftops.
• Work in confined spaces and adverse weather conditions.
• Respond calmly during emergency situations.
• Establish and maintain effective working relationships with employees, contractors, and the public.

Equipment Used

• Recovery machines
• Vacuum pumps
• Refrigerant gauges
• Electronic leak detectors
• Digital multimeters
• Clamp meters
• Megohm meters
• Combustion analyzers
• Micron gauges
• Power tools
• Pipe threading equipment
• Brazing equipment
• Welding equipment
• Ladders
• Scaffolding
• Aerial lifts
• CMMS software
• Microsoft Office applications

Minimum Qualifications: Knowledge and level of competency commonly associated with the completion of specialized training in the occupational field, in addition to basic…