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What Are the Causes of Odors in Car Air Conditioning? How to Eliminate Them?

1 Answers

Mike

07/29/25 7:38pm

Odors in the air conditioning system can be caused by mold growth due to humid climates or lack of timely cleaning. Regular cleaning and disinfection of the air conditioning system can help eliminate these odors. Here are the main areas where odors commonly originate in the air conditioning system: Odors from the air conditioning filter: The air conditioning filter is responsible for filtering the air that enters the car cabin. Over time, it can accumulate a significant amount of dust and debris. Odors from the air conditioning evaporator: The evaporator, shaped like thick aluminum fins, can also collect dust. After using the air conditioning, the evaporator, which is where hot and cold air exchange occurs, can accumulate moisture from condensation. This moisture can lead to mold growth and musty odors. Odors from the air conditioning ducts: The air conditioning ducts are another area where dust can accumulate. The cold air flowing through the ducts can cause condensation, leading to moisture buildup, mold growth, and musty smells. Odors from the interior padding near the air conditioning drain: Condensation from the air conditioning system is typically drained through the air conditioning drain pipe. If the drain pipe becomes clogged, moisture cannot be properly drained, potentially contaminating nearby interior components such as floor mats, leading to mold growth and musty odors.

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