Air conditioner is an equipment takes in air and converts air into harmonious air and blows.
In other words, it is a general term for equipment that corresponds to heat exchange equipment, excluding heat source equipment(Chillers, Boilers, etc.) and heat medium transport equipment(Pumps, Pipes, Ducts, etc.) in air conditioning systems.
Therefore, an air conditioner basically consists of an air filter, an air cooler, a dehumidifier, an air heater, a humidifier, and a blower all in a single casing.