Why does water drip from the chassis when the car's air conditioning is on?

1 Answers
OJourney
07/30/25 3:29am
It is normal for water to drip from the exhaust pipe when the car's air conditioning is on. This happens because the engine generates steam during operation, which is expelled through the exhaust pipe from the rear muffler, causing water to drip. Below is an introduction to car air conditioning: 1. Cooling principle: The air conditioning compressor compresses the refrigerant, which then expands through a valve. The expansion releases heat, lowering the refrigerant's temperature. The refrigerant flows into the evaporator inside the car, absorbing heat from the cabin air through contact with the evaporator. It is then compressed again and expands once more, repeating this cycle to gradually remove heat from the cabin air. 2. Air conditioning mode settings: In summer, use the recirculation mode more often when the air conditioning is on, while in winter, use the fresh air mode more often when heating. Use recirculation when the air quality is poor and fresh air when it is good. On rainy days, if you want fresh air without opening the windows, use the fresh air mode, which has the same effect as opening the windows.
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