How to Deal with Blocked Car Air Conditioning Pipes?
2 Answers
Open the system pipeline and repeatedly flush it with high-pressure gas, replacing some components if necessary. Blockages in the air conditioning system pipeline mostly occur at the electronic expansion valve, capillary tube, throttle valve core, and other parts, which are generally equipped with dry filters. When it is confirmed that there is a blockage in the system pipeline, the system pipeline should be opened, preferably at both the throttle component and possible flared connection points. The following are the functions of car air conditioning: 1. Temperature regulation: This is the main function of car air conditioning. In summer, the cooling system produces cold air to lower the temperature inside the cabin; in winter, except for large commercial vehicles that use independent combustion heaters for heating, other vehicles basically use the residual heat of the car for heating. 2. Humidity regulation: Humidity greatly affects the comfort of passengers in the car. The humidity inside the cabin should generally be maintained at 30%-70%. Ordinary car air conditioning does not have the function of regulating humidity inside the car; only by using ventilation devices or the integrated heating and cooling air conditioners used in high-end luxury cars can this be achieved. 3. Airflow regulation: The speed and direction of airflow greatly affect human comfort. If blowing directly, when the temperature is appropriate, the speed should be limited to a certain range, and the speed can be appropriately adjusted according to the passenger's living environment, age, health status, and habits regarding heat and cold. 4. Air purification: The quality of air inside the cabin is an important guarantee of comfort.
I've encountered the issue of clogged car air conditioning ducts several times, and it's really frustrating. The most common causes are dust and small insects blocking the ducts, especially after long drives in summer when debris tends to accumulate. The solution depends on the severity of the clog. For minor blockages, I recommend trying DIY methods: use a can of compressed air to blow forcefully into the AC vents, which can dislodge a lot of dust. Also, check if the cabin air filter is dirty—if it is, replace it with a new one. If blowing doesn't improve airflow, the blockage might be more serious, like leaves or debris stuck in the duct bends. In such cases, visit a professional repair shop where they can use high-pressure cleaning equipment to thoroughly clear the ducts. Prevention is key: always close the external air circulation when parking to prevent insects from entering, and regularly replace the filter to reduce clogging risks. Remember, avoid forcing solutions to prevent damage to other components—early detection and proper handling save money and peace of mind.
