This position performs journey-level, highly skilled, maintenance, repair and installation of industrial and commercial heating, ventilation, air conditioning equipment, and control systems 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, flu gas systems, condensate pump and drain lines, fan coil units, condensing units, unit heaters, radiant and fan forced heaters, hydronic heating and cooling systems, and complex computer operated direct digital control (DDC), and complex pneumatic control systems. MINIMUM QUALIFICATIONS: Any combination of education, experience and training equivalent to: 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.