HVAC Technician II

To perform preventative, routine, and specialized maintenance duties involving troubleshooting, repair, and/or installation of all heating/cooling, refrigeration, ventilation, and building management equipment at all St. Charles County Government facilities.- Performs a variety of preventive maintenance, troubleshoots, repairs, and installs HVAC, boiler systems and refrigeration equipment as well as building systems and controls.- Diagnoses and monitors building systems operations. Troubleshoots diagnostic from heat pumps, rooftops units, boilers, chillers and cooling towers, CAVs, VAVs and commercial self-contained units as sent from building management system and recommends repairs or replacement.- Uses a variety of testing equipment, including, but not limited to volt/ohm electrical meters, ammeter, refrigerant gauges, leak detectors, psychrometers, manometers, and pneumatic gauges.- Uses refrigerant recovery machines, scales and charging systems per EPA requirements. Conducts refrigerant equipment repairs, removal of refrigerant according to EPA regulations, soldering and brazing, leak check, installation, and charging.- Analyzes chemical treatment of all closed/open, hot/chilled water loops and adjusts as required per system, while adhering to all governmental regulations.- Monitors, operates, troubleshoots, and repairs building management computer system and components.- References existing schematics, wiring/pneumatic diagrams, blueprints/technical manuals, and researches technical references materials when necessary.- Operates grinders, welders, and gas cutting/soldering torches to perform metal fabrication tasks.- Installs electrical wiring/piping of power and control circuits of all voltages.- Calibrates pneumatic systems and operational controls.- Installs and adjusts ducts and dampers of various material types.- Installs and aligns pumps, motors, belts, pulleys, and sheaves.- Maintains, troubleshoots, repairs, installs electronic, pneumatic, computerized equipment/controls.- Documents completed work on maintenance cards, detailing observation, action, and recommendations.- Use of good oral and written communication skills.- This position is part of an On-Call rotation among HVAC staff. Will be required to report to work as needed, outside of normal business hours.- May be required to perform all general building maintenance including, but not limited to, snow removal, carpentry, installing troubleshooting and repairing equipment fixtures, computer equipment, doors and locks.- Performs other duties as assigned.REQUIREMENTS:Education- Two (2)-year degree certificate from vocational/technical training in HVACR from an accredited school is required.- Associates degree preferredCertifications- Certified universal by the EPA in the handling of refrigerants.- Must have and maintain a valid drivers license and a satisfactory driving record.- Successful completion of Professional Level Certification - Esco GroupExperienceMinimum three (3) years of commercial HVAC service/maintenance experience required[]{fr-original-="" style="margin: 0px; padding: 0px; font-family: inherit; font-weight: inherit;"}