Specifications include, but are not limited to: perform preventive maintenance, testing, inspection, repairs, troubleshooting and installation of all types of HVAC/mechanical equipment and its associated controls including but not limited to: air compressors, air dryers, air handling units (AHUs), base board heaters, boilers, chillers, compressors, condensers, evaporators, cooling towers, infrared heaters, duct heaters, exhaust fans, fan-coil units, fans, heating/cooling -packaged type/self-contained units, heat exchangers, heat pump units, heating coils, hot air furnaces, pneumatic controls, pumps, refrigerant coolants, refrigerant piping, steam or hot water boilers, unit heaters, unit ventilators, VAV systems and variable unit drives.