Is 4S AC Pipeline Cleaning Necessary?

[EloiseLynn]

AC pipeline cleaning is necessary. During long-term use, the pipeline system of a car's AC can gradually become dirty, even breeding fungi, various bacteria, and emitting unpleasant odors. More information on car AC systems is as follows: 1. Condition: The car AC evaporator, fan, etc., are in a closed and dark state for a long time, creating a high-temperature and humid internal environment. Impurities, dust, bacteria, and viruses in the air enter the AC system and, combined with condensation, clog components like the evaporator. Over time, they accumulate large amounts of dirt, nicotine, mold, fungi, etc. 2. Hazards: The harm of unpleasant odors from car AC systems is not just about the smell. Numerous experiments have proven that water vapor adhering to the AC evaporator produces at least three types of molds harmful to human health: Aspergillus, Penicillium, and Cladosporium. Although there are currently few complaints related to car AC systems, medical tests indicate that these molds can harm human health in seven ways: causing headaches, fever, sudden sore throat, tonsil infections, asthma, flu-like symptoms, dermatitis, and delayed wound healing, among other adverse reactions.

[StEverett]

Every time I go to the 4S shop for car maintenance, I always ask the technician about cleaning the air conditioning ducts, and they always emphasize that this should not be overlooked. After driving for a long time, dust, bacteria, and mold can accumulate in the air conditioning system, especially when using the AC in humid or dusty environments. These contaminants clog the ducts, not only causing a musty smell in the airflow but also reducing cooling efficiency. If left uncleaned, the odor will worsen over time and may even damage internal components like the evaporator or fan, leading to more expensive repairs later. The cleaning process is quite simple—technicians use professional equipment to flush the ducts and remove the buildup, which takes about one to two hours. I recommend doing this annually or every 20,000 kilometers to ensure smooth operation of the air conditioning system and avoid major issues down the road.

[LaNatalie]

I never paid much attention to AC cleaning until one day when I noticed a foul smell coming from the vents, especially right after starting the car. I took it to the dealership for a thorough cleaning, and the results were immediate. The odor disappeared completely, airflow improved noticeably, and driving became much more comfortable. If left uncleaned, those contaminants could cause respiratory discomfort or even corrode components. The cleaning cost is reasonable, usually around a few hundred yuan—far more economical than dealing with repairs later. Now I make it a habit to schedule a seasonal check during spring/summer transitions to maintain a clean cabin environment. This is definitely not something to delay—a small effort brings significant improvement.

[AubreeRose]

As a daily commuter, I believe AC duct cleaning is essential. Over time, dirt, dust, and bacteria accumulate in the AC pipes and get blown into the car with the airflow, potentially causing coughing or allergies. If not cleaned promptly, it can also reduce cooling efficiency, making summer driving more fuel-consuming. A simple cleaning can improve air quality and safeguard health. Generally, once a year is sufficient—don't wait until problems arise.