Your car takes in air from outside and blows it into the cabin directly towards you. It also prevents leaves and other dust from getting stuck in the blower motor. The cabin air filter removes harmful pollutants like pollen and dust from the outside air, which you are breathing within the car. RELATED: Symptoms of a Bad Heater Blower Motor Resistor What is a Cabin Air Filter? If you hear a whistling noise from the air vents that weren’t there before – it is definitely time to inspect the cabin air filter and replace it if it’s bad. If the airflow is heavily restricted because of a clogged or bad cabin air filter, it can also cause it to make strange noises when the air is trying to pass through the filter. Even if they are on the other side of the filter, they can get into the car and cause allergy symptoms. If you are sensitive to different particles and may even have an allergy to these things, you will notice that your allergy is getting worse while driving if you have a bad or old cabin air filter.Īs we talked about before, all particles and dust from the outside air will get filtered and stuck in the cabin air filter. If you notice a lot more foggy or icy windows recently than before, it is definitely time to check the cabin air filter. This will cause the humidity level to increase a lot in the cabin, which will cause foggy windows or even icy windows on the inside if you live in a cold country. This can cause the filter to collect condense more often, and this water condense will get blowed into the car cabin. Foggy or icy windowsĪs I told you before, water condense will get stuck in the cabin air filter, which will cause mold inside of the filter. This will cause the airflow to drop drastically, and it can even cause it to stop blowing anything at all! 3. If the filter has been used for a long time, the filter will get clogged, and less air will pass through it. This happens because the cabin air filter filters all air that is going into the car. The next thing that you may notice is that the airflow’s efficiency through the vents has dropped recently. As you might understand, this will cause mold in the filter after a long time of use, and therefore you need to replace the filter within the specified schedules to prevent it. It will also filter condense through the filter during this filtering process, which will get stuck there. When the car is filtering the air from the outside, it will collect all dust that will get stuck in the filter, creating a bad smell after a while. The first thing you will notice if you have a bad or old cabin air filter is getting a horrible smell inside the car. Here is a more detailed list of the most common symptoms of a bad cabin air filter: 1. Also, if the airflow through the vents is very low, it’s definitely time to replace the filter. If you notice foggy or icy windows every morning, it could also be due to a bad filter. The most common symptom of a bad cabin air filter is a bad smell in your car’s cabin. Can you wash a cabin air filter? Bad cabin air filter Symptoms
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