Calculating HVAC design for a high-rise building requires a comprehensive understanding of the building’s layout, size, and occupancy. The first step is to determine the building’s cooling load, which is the amount of energy required to cool the building. This can be calculated by taking into account factors such as the building’s insulation, window size, and orientation. Once the cooling load is determined, the next step is to select the appropriate HVAC system for the building. This includes selecting the right type of equipment, such as air conditioners, chillers, and boilers, as well as the right size and capacity. Finally, the system must be properly installed and maintained to ensure optimal performance.