What type of HVAC system is typically installed on the roof of a building?

The packaged unit is commonly installed on the roof of a building because it combines both heating and cooling components into a single unit, making it ideal for commercial and larger residential applications. These systems often include the furnace, air conditioning, and ventilation all housed together, which saves space and simplifies installations.

Packaged units are designed to operate efficiently in outdoor conditions since they are exposed to the elements when mounted on a rooftop. This rooftop installation allows for better use of building space and can lead to quieter indoor environments since the main components are located away from the living or working areas inside the building.

Other options, such as central heating units, split systems, and window units, are typically designed for different installation scenarios. Central heating systems may require a separate air conditioning unit and extensive ducting, split systems typically have indoor and outdoor components that are not suited for rooftop installation, and window units are meant for residential use in individual windows rather than a centralized system found on a roof.