Performs installation, maintenance, troubleshooting, and repair of commercial and industrial air conditioning and refrigeration systems that provide a variety of functions such as heating, cooling, humidifying, dehumidifying, circulating and filtering.Carry certification card on person while in a duty status, the card shall be presented upon request.Size and complexity of air conditioning and refrigeration equipment worked on varies.Systems use various methods of air conditioning such as mechanical and vapor compression, absorption and air cycle.Some of these areas may have special, critical, or rigid environmental control requirements such as communication centers, data processing centers and operating rooms.Maintains the efficiency, reliability, and safety of operation of systems by checking performance, diagnosing problems, and making necessary repairs or adjustments or by replacing defective parts.Checks elements such as low side and high side pressure, temperature of the cooling units, pressure and temperature of the liquid and suction lines, and the running time of the various mechanismsRepairs or replaces fans, pumps, thermostats, humidistats, motors, compressors, valves, gauges, pneumatic and electric controls, filters, and other related elements.Installs refrigeration and air conditioning systems by positioning compressors, motors, condensers, humidifiers, dehumidifiers, evaporators, heaters, and other components in accordance with design specifications.Installs and connects auxiliary control mechanisms and piping or tubing.Connects recording and gauging devices.Charges refrigeration systems and tests installation for leaks.Starts unit and adjusts it for proper operation and optimum performance.Must have the skill and knowledge necessary to install, maintain, troubleshoot, and repair a wide variety of air conditioning and refrigeration systems including circulating air and chilled water air conditioning systems, high, medium, and low temperature refrigeration systems, and total environmental control systems.Make repairs to a variety of heating, ventilation, air conditioning, and refrigeration systems.Read and interpret blueprints, specifications, and technical instructions.Skilled in the use a variety of tools, test equipment, and close tolerance measuring devices such as voltmeters, ammeters, multimeters, vacuum and acid pumps, pressure gauges, serviceman's thermometer, humidity recorders, micrometers, calipers, and soldering equipment.Evaluate system operation, detect deficiencies, troubleshoot cause, and make necessary adjustments and repairs.Follow all guidelines and procedures pertaining to the use and handling of refrigerants specified by 40 CFR 82, its codices, amendments, and subparts; all local, state and federal regulations; and PWC policies, standard operating procedures and practices.Moderate lifting up to 50 poundsResponsible for staying abreast of current and ever-changing environmental laws pertaining to refrigerant handling.Able to learn and utilize this software platform - NAVFAC’s MAXIMOMay be required to respond to job related emergencies, within 1 hour of notification.

4+ years’ Experience as HVAC Mechanic in light commercial or heavy industrial. Residential experience will not count towards experience.Universal Certification received from an EPA approved certifying program.Valid State Driver's LicenseBe CPR certified and have OSHA 10 before starting work; SJS may provide financial assistance for these courses if necessary.Be able to read and interpret standard blueprints and operating manuals.Ability to perform regular and recurring inspections or surveys in which there is a considerable amount of physical activity including walking, stooping, bending, and climbing.Work at heights, in confined spaces, and possibly in awkward positions for extended periodsMust be able to successfully pass a drug test and a thorough background check for access onto a military installation; please note the background check for this position extends past 7 years, in conformance with federal law and US Department of Justice guidelines for work on a military installation.