Why does water drip from under the car when the air conditioning is on?

1 Answers
SabrinaAnn
07/30/25 3:49am
Because the car's air conditioning system is equipped with an evaporator inside the dashboard. When the air conditioning is turned on (A/C button ON), the surface temperature of the evaporator becomes very low. The moisture in the hot air inside the car condenses on the heat-absorbing fins of the evaporator, and the water droplets are collected by the plastic housing of the evaporator and drained out of the car through a pipe. The functions of the air conditioning system are as follows: 1. The air conditioner can control the temperature inside the cabin, heating or cooling the air to maintain a comfortable level; 2. The air conditioner can remove moisture from the air. Dry air absorbs sweat from the body, creating a more comfortable environment; 3. The air conditioner can intake fresh air, providing ventilation; 4. The air conditioner can filter the air, removing dust and pollen.
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