What Causes Smoke and a Burning Smell from Car Air Conditioning Vents?

[Vanessa]

Smoke and a burning smell from car air conditioning vents are generally caused by the following two reasons: 1. Blocked air conditioning intake: A blocked air conditioning intake prevents hot air from being expelled, and when heat cannot dissipate, it may burn plastic components. In this case, the air conditioning intake needs to be cleaned. 2. Aging air conditioning wiring: Aging wiring can cause circuits to overheat during electrical heating, or plastic components may shift internally and overheat. In this situation, the car's air conditioning system needs to be disassembled to inspect the wiring. Precautions for using air conditioning: Avoid prolonged use, as it can increase pressure on the condenser and damage the cooling system. Therefore, it is advisable to limit continuous usage. Once the cabin reaches a comfortable temperature, turn off the air conditioning and restart it after some time.