2. The heater box is only a heating component in the hot air conditioning system. When the water in the engine passes through the heater box, the heater box is heated, the fan works, and the wind blows against the heater box. When the wind passes through the warm air trough, it is the warm air coming out of the air outlet.
3. The condenser is the heat dissipation component in the cold air conditioning system. Just like the water tank, it is used for cooling water, and the condenser is used for cooling refrigerant. Its heat dissipation directly affects the air conditioning effect.
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