They are cost effective, energy efficient and can be installed swiftly, often within a day. 

They consist of an indoor unit which is mounted on the wall and an outdoor unit placed outside the building. 

They operate silently providing a uniform temperature throughout the premises. Installation requires careful planning to design the duct layout and may take a few days to ensure a seamless setup.  

They are best suited for areas with dry heat. The installation time and procedure vary based on the existing infrastructure and whether the system will be roof mounted or installed in a window.