Ductable
AC

A ductable air conditioner is a split air conditioner in which conditioned air from the indoor unit is passed into the room using circular/ oval/ rectangular ducting. … If much more larger areas are to be covered then a centralised Air Conditioning plant is deployed. In big malls this is the system used.

Ductable air conditioning, commonly referred to as ducted AC or central air conditioning, is a type of air conditioning system designed to provide efficient cooling (and sometimes heating) to an entire building or a large area. Unlike standalone air conditioning units that are placed in individual rooms, ductable AC systems are centralized and distribute conditioned air through a network of ducts and vents installed throughout the building