Mechanical services in the context of building construction and design encompass a range of essential systems and components that ensure the functionality and comfort of indoor environments. These services include heating, ventilation, and air conditioning (HVAC) systems, plumbing for water supply and wastewater removal, fire protection systems, electrical systems, elevators and escalators, mechanical ventilation for air quality control, building automation and energy management systems, as well as noise control measures. Mechanical engineers and building services professionals play a vital role in designing, installing, and maintaining these systems to create safe, energy-efficient, and comfortable spaces within buildings of all types and sizes.