Facilities technicians monitor the safety and comfort of buildings. They operate, diagnose, and maintain air conditioning, ventilation, chiller and refrigeration, water treatment, heating, pumping, low-pressure, boiler, and control systems. Some also operate electrical, plumbing, and emergency systems.
Facilities mechanics keep buildings safe and comfortable. This includes inspecting and maintaining fire safety equipment, building envelope, electrical, heating, ventilation, air conditioning, plumbing, and water treatment systems. They also perform ground maintenance.