Knowing the types of air conditioners and their application in air conditioning in general, air conditioners are responsible for absorbing hot air inside and producing cool and air conditioned through the process of evaporation of refrigerant to gas in the evaporator of the air conditioner. The air conditioner consists of a vaporizer to absorb heat (evaporator), a compressor to condense the refrigerant gas, an external condenser to cool the refrigerant, an expansion valve.