Packaged A/C’s are generally installed in areas with more cooling load and to effeiciently maintain the units from outside the premises. Usually, areas such as Mosques, Large Kitchen Areas, Warehouses for Storage etc. are implemented with Package A/C Units.
With the Packaged A/C Units, both the Indoor and Outdoor Sections of conventional DX systems are combined together saving space and complications. Another advantage with the package A/C unit is the quick installation since there is no Refrigerant Piping included and the only work would be to place the units and do the power connection.
The minor disadvantage to Packaged Units is that, there should be adequate space to run the ductwork which would comprise of the Supply and Return Ductwork. This would be an added initial cost for the client.