Has a thorough understanding of various equipment to include large unitary packaged equipment over 25 tons, SWUD units, VRF, basic air-cooled chillers, semi-hermetic compressors, dehumidification equipment, complex specialty equipment, air handlers of all types, simple boilers, cooling towers, water pumps, valves, actuators, and VFD's. Work Environment: Exposure to weather, extreme heat or cold, high noise intensity level, atmospheric conditions, exposure to electrical shock, exposure to toxic or caustic chemicals, wet and/or humid, vibration, proximity to moving mechanical parts, working high exposure places.