What Causes the Musty Smell in Car Air Conditioning?

[DeEli]

The musty smell in car air conditioning can be attributed to the following reasons: 1. The system has been running for a long time, leading to dust accumulation between the heat exchanger fins, causing blockage; Solution: Clean the heat exchanger fins. 2. Dust adhering to the air outlet of the indoor unit and the surface of internal components, which is difficult to avoid even in special environments like computer rooms or hotel rooms where the air is filtered; Solution: Clean the air outlet and internal components. 3. Condensation water retained on the heat exchange coils, fins, and surrounding components slowly evaporates, creating a high-temperature condition around the coils suitable for microbial growth. The large amount of gas produced during microbial reproduction is released by the air conditioning system, becoming the source of the foul odor. Solution: Thoroughly clean the evaporator box of the air conditioning system. Professional no-disassembly cleaning agents can be used, or it can be removed for cleaning, but this method requires recharging the refrigerant. Since most foreign matter is adsorbed on the evaporator core, the odor is emitted accordingly.