What Causes Water Leakage Under the Car When the Air Conditioning is On?

[Edgar]

Here are the specific reasons for water leakage under the car when the air conditioning is on: 1. Evaporator drainage: 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 will condense on the surface of the evaporator's heat-absorbing fins, and the water droplets are collected by the plastic housing of the evaporator and discharged out of the car through a pipe. 2. Compressor condensation formation: Sometimes, the exterior of the compressor (low-pressure area) installed in the engine compartment can condense moisture from the air, causing it to drip onto the ground. 3. Lack of insulation foam wrapping: If the low-pressure pipes are not wrapped with insulation foam, the surface of the pipes can easily condense moisture from the air, and water droplets often gather and drip from the lowest point of the pipes.