The three main types of air conditioning systems are: • Window Air Conditioners: These are self-contained units installed in a window or a hole in an exterior wall. They are suitable for cooling individual rooms or small spaces. • Split Air Conditioners: Split systems consist of two main components—an outdoor unit containing the compressor and condenser and an indoor unit containing the evaporator. They are commonly used to cool multiple rooms or larger areas. • Central Air Conditioning Systems: Central AC systems are designed to cool an entire building or a large area. They involve a network of ducts that distribute cooled air throughout the space. Central systems can be divided into packaged systems (all components in one unit) and split systems (components separated between indoor and outdoor units).