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HVAC stands for Heating, Ventilation and Air Conditioning. Also, HVAC provides the heating of air along with the car’s air conditioning system. The air is heated using the heat from hot water in the engine’s cooling system. HVAC also uses an evaporator to cool down the air through the evaporation of refrigerant gas. This creates the most ideal cabin temperature according to the operation of the instrument panel.
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Another important function of the air conditioner is defogging the window and dehumidifying the cabin. To prevent the window from fogging, the modern car air conditioner initially cools the air; a little lower than what the user sets. Later, the system adjusts the temperature as set by the part of passing cooled air over the heater.
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