Physical Attributes: Bending at Waist, Carrying, Climbing, Crawling, Crouching, Dust or gases, Electrical Hazards, Feeling, Fumes or Odors, Handling, Hearing, Kneeling, Lifting, Mechanical Hazards, Noise and/or vibration, Pulling, Pushing, Reaching, Seeing, Stooping, Talking, Works Alone, Works Around Others. Operate, maintain, troubleshoot, and repair HVAC and mechanical facility systems, including air handling units, rooftop units, exhaust systems, pumps, fans, chillers, boilers, cooling towers, and associated equipment.