A building provides shelter but building services are what make it functional for occupants. Building services include HVAC, plumbing, electrical, lighting, transportation, fire protection, and more. They provide thermal comfort, water and waste removal, power, communication, and safety. The architect is responsible for designing and planning these mechanical, electrical, and public health systems to allow buildings to operate safely and comfortably in an environmentally friendly way. Proper planning of building services is important as they require significant floor and ceiling space. Buildings rely heavily on services like electricity, ventilation, and vertical transportation.