HVAC I

Performs journey-level maintenance, repair, and installation of industrial and commercial HVAC (Heating, Ventilation, and Air Conditioning) equipment and systems; and performs related work as required. Agency procedures and HVAC codes. The position reports to 4030 Hummer Road in Annandale Virginia and will be dispatched to various Park Authority sites throughout the county. Working hours are from 6:00am to 2:30pm Monday through Friday. Works under general direction.

Illustrative Duties

(The illustrative duties listed in this specification are representative of the class but are not an all-inclusive list. A complete list of position duties and unique physical requirements can be found in the position description.)

• Maintains, installs, troubleshoots, and repairs industrial, residential, and commercial mechanical, air-conditioning, heating and ventilating equipment and control systems;
  
• Troubleshoots, repairs, installs, and maintains complex computer- operated direct digital control (DDC), energy management control systems, and related software programs, to include programmable microprocessors, central processing units with multiple analog and digital inputs and outputs, transducers, thermistors, and electric and electronic damper and valve actuators;
  
• Calibrates, troubleshoots, repairs, installs, and maintains complex pneumatic control systems, to include components such as receiver controllers, signal selectors, pneumatic reversing relays, temperature transmitters, direct and reverse acting pneumatic thermostats, pneumatic electric switches and electric pneumatic switches, pneumatic damper and valve operators, air compressors, and refrigerated air-dryers;
  
• Troubleshoots, repairs, installs, and maintains complex mechanical, air-conditioning, heating and ventilating equipment such as chillers, air-conditioners, heat-pumps, oil and gas fired boilers, oil and gas furnaces, cooling towers, pumps, air-handlers, exhaust air units, make up air units, duct air conveyance systems, variable air volume systems, variable/volume temperature systems, multi-zone units, electrical power and control circuits, time clocks, gas piping, fuel oil supply piping, fossil fuel burning device flue gas systems, condensate pump and drain lines, fan coil units, condensing units, unit heaters, radiant and fan forced heaters, and hydronic heating and cooling systems;
  
• Carries out designated procedures for seasonal start-ups and shut-downs;
  
• Diagnoses and troubleshoots building air comfort and temperature problems; air-distribution, air balancing or stratification problems; and building insulation or vapor barrier deficiencies;
  
• Ensures mechanical systems are running at peak efficiency by inspecting equipment for operating efficiency and safety standards;
  
• Ensures energy management and energy saving strategies are maintained and implemented properly and efficiently;
  
• Monitors and inspects construction projects and contract work to ensure compliance with contractual agreements and with national, state, and local Code requirements;
  
• Inspects work in progress and upon completion for conformance with prescribed specifications and safety standards;
  
• Maintains records of work performed, as well as parts and materials used, through the use of work orders, daily logs, computerized maintenance management system (CMMS), material request forms, overtime and leave slips, daily credit card transaction logs, credit card receipts, and vendor invoices;
  
• Maintains records of equipment failures and repairs;
  
• Orders parts for emergency and routine repairs;
  
• Maintains records of equipment operation logs of temperature, pressures, volts, amps, combustion efficiency reports, safety inspections, and equipment refrigerant records;
  
• Produce HVAC system and efficiency reports that identify system problems or confirm proper operating conditions, and makes recommendations for repairs or improvements;
  

Required Knowledge Skills and Abilities

(The knowledge, skills and abilities listed in this specification are representative of the class but are not an all-inclusive list.)

• Knowledge of the standard practices, methods, tools, and materials common to the HVAC trade;
  
• Knowledge of the building and fire codes related to work performed in the HVAC trade;
  
• Knowledge of the occupational hazards and safety precautions of the trade;
  
• Working knowledge of operations and maintenance of buildings and building systems to include heating, ventilation and air conditioning, electrical, plumbing, and energy systems;
  
• Working knowledge of the use of Direct Digital Controls, personal computers, and related software to operate systems, identify problems, and repair equipment;
  
• Ability to read and interpret blueprints, as-built control diagrams, and HVAC equipment electrical schematic control wiring diagrams;
  
• Ability to use tools and test equipment pertinent to the trade, to include combustion efficiency testers, electrical meters, refrigerant charging charts, vacuum pumps, micron gauges, refrigerant electronic leak detectors, infrared temperature testers, pneumatic test equipment, electronic temperature testers, micro amp flame signal testers, gas pressure testers, manometers, air balancing test equipment, water balancing test equipment, electronic refrigerant charging scales, propane torches, map gas torches and oxygen and acetylene torches, refrigerant reclaim and recovery equipment, and hand and power tools;
  
• Ability to lift, stoop, bend, crawl, and work in tiring and uncomfortable positions and from ladders and scaffolds;
  
• Ability to work in uncomfortably hot or cold temperatures.
  

MINIMUM QUALIFICATIONS:

Any combination of education, experience and training equivalent to a high school diploma or GED issued by a state department of education; plus a two-year technical degree in air conditioning functions such as: heating, cooling, and ventilation; plus two years of progressively responsible air conditioning or HVAC experience or completion of an apprentice-level vocational training program in air conditioning for a total of four years of progressively responsible air conditioning or HVAC experience.

PREFERRED QUALIFICATIONS:

Previous HVAC level work: ability to operate a personal computer, using MS Office software; Previous work order systems experience. Previous HVAC preventative maintenance experience

CERTIFICATES AND LICENSES REQUIRED:

Driver's license (required)

NECESSARY SPECIAL REQUIREMENTS:

All newly hired employees are required to be fully vaccinated against COVID-19 (two weeks after the last required dose) as a condition of employment or obtain approval of a medical or religious exemption prior to their start date. Proof of an exemption or vaccination status will be required during the pre-employment onboarding process. New employees who obtain an exemption from the vaccine mandate for medical or sincerely held religious beliefs may be subject to a weekly testing requirement. Vaccinated employees and employees with a medical or religious exemption will complete the attestation online on their first day of employment or shortly thereafter.

The appointee to this position will be required to complete a criminal background check, child protective services registry check, and driver's license check to the satisfaction of the employer.

PHYSICAL REQUIREMENTS:

Ability to lift 50 pounds and climb using ladders or portable lifts. All duties may be performed with or without reasonable accommodations.

SELECTION PROCEDURE:

Panel interview; may include exercise.

Fairfax County Government prohibits discrimination on the basis of race, color, religion, national origin, sex, pregnancy, childbirth or related medical conditions, age, marital status, disability, sexual orientation, gender identity, genetics, political affiliation, or military status in the recruitment, selection, and hiring of its workforce.

Reasonable accommodations are available to persons with disabilities during application and/or interview processes per the Americans with Disabilities Act. Contact 703-324-4900 for assistance. TTY 703-222-7314. EEO/AA/TTY.  

Fairfax County was home to many of America’s earliest statesmen, including George Washington of Mount Vernon and George Mason of Gunston Hall. It is one of the premier centers of technology in the United States. Located just west of the nation’s capital, Fairfax County is the most populous jurisdiction in the Commonwealth of Virginia. It has a large, diverse and dynamic economy, and is home for eight Fortune 500 companies, more than 400 international owned firms, and the largest concentration of technology jobs of any major U.S. market. Minority-, women-, and veteran-owned businesses make significant contributions to the economy and add diversity to the business community.

The County offers residents an excellent environment in which to raise and educate their children. The Fairfax County Public School System and area private schools offer parents numerous education options. Fairfax County is also a leader in higher education, where five major colleges and universities, including the main campus of George Mason University, are located. Northern Virginia Community College – the largest community college in the Commonwealth of Virginia – has two campuses in Fairfax County. The community has a wealth of cultural and recreational resources that provide abundant opportunities for children to learn and grow.