When it comes to car maintenance, the cabin air filter is perhaps the most commonly overlooked component in the car, and many people have little understanding of it. Every car contains a number of crucial components that must all be in good working order for the vehicle to be safe and pleasant for all users.
A cabin air filter stops leaves and other dust from entering the system and becoming stuck in the blower motor. If you once had an old car without a cabin air filter, you might have noticed the weird noises it used to make inside your car.
Well, in this reading, we’ll explore what a cabin air filter is, its location, functions, diagram, and symptoms of bad ones. We’ll also explore its replacement and cost.
Ok, let’s get to it.
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What is a cabin air filter?
A small pleated filter with multiple fibers of paper, cotton, or some other engineered material serves as the cabin air filter. As you breathe outside air inside the car, the cabin air filter filters out harmful pollutants like dust and grime.
Additionally, it keeps dust and other debris from clogging the blower motor. Air is drawn into your car from the outside and directed straight towards you inside. As you may imagine, there is a lot of harmful dust and particles on the roadways, which is why we need a filter to remove them.
The air that the driver and other passengers breathe inside the vehicle is purified by the cabin filter. Because air pollution has a major negative impact on our health and ability to concentrate when driving, this is why this filter is crucial. Air pollution is a major hazard.
As per the European Environment Agency’s official data, in Europe alone, air pollution causes about 460,000 premature deaths. Eighty percent of people living in European cities are concerned about the issue of air pollution.
Where is the cabin air filter located in the vehicle?
In most cars, the cabin air filter is located either behind the glove box or behind a cover that may be accessed from the engine bay through the front windscreen. Look in the area of the blower motor if you know where it is!
The filter is typically installed behind the glove compartment in many Asian cars, and in certain situations, the glove compartment has to be removed in order to replace the cabin filter. In European cars, it is frequently hidden behind a cover behind the front windscreen from the engine bay.
To locate the filter in many car models, you’ll need to remove the glove box. On a piece of paper that comes with the filter, many manufacturers of cabin air filters will provide you with instructions on how to replace the cabin air filter for your particular automobile model.
Functions
Just as mentioned earlier, dust, pollution, smells, allergies, and other impurities are removed from the air entering the cabin using cabin air filters. This filter prevents the outside from entering your car, provided that everything is relatively properly sealed, including the doors, roof, and windows.
Like any other atmospheric filter, the one installed in the cabin of your car collects pollutants when outside air travels past it on its way inside. The ventilation system of a car includes cabin air filters.
Why do you need to change your cabin air filter? If the cabin filter is not changed, you may have manifestations such as a bad smell, poor airflow through the vents, inside windows that are foggy or icy, allergies, or whistling sounds from the air vents.
Whatever bad smell is in your car’s interior has a good chance of remaining there, which might lower its value and even affect the air conditioner’s internal components if the cabin air filter is not changed. It is therefore always advised to maintain a clean and up-to-date cabin air filter.
To guarantee clean and healthy air inside the car, routine maintenance and regular cabin air filter replacement are important. A dirty or clogged filter can cause unpleasant cabin aromas as well as lower air quality and HVAC system efficiency.
Car owners can make driving more enjoyable and pleasant by being aware of the function of the cabin air filter and giving it priority maintenance. In addition to improving traveler comfort, clean, filtered air also supports improved health and general well-being.
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What are some symptoms of a bad or failing cabin air filter?
If your car’s cabin air filter has never been changed before and it’s getting bad, you might experience one or more of these symptoms:
- Poor airflow through the vents.
- Foggy or icy windows.
- Unpleasant smell.
- Allergy symptoms.
- Increased noise levels of the fan.
Poor airflow through the vents
The next thing you might notice is a recent decrease in the efficiency of the airflow through the vents. All of the air entering the car is filtered by the cabin air filter, which is why this occurs. Less air will flow through the filter if it has been in use for a long time and becomes clogged. This will result in a decrease in airflow, and it might even stop blowing completely!
Foggy or icy windows
We also need to be aware that our cabin air filter will eventually develop mold inside due to water condensing in it. The filter may collect water more frequently as a result, and the water condensation will therefore be blown into the car’s interior.
As a result, the cabin’s humidity level will rise significantly, which could result in interior windows that are foggy or even icy if you reside in a cold country. It’s time to check the cabin air filter if you’ve noticed much more frosty or foggy windows recently than you did previously.
Unpleasant smell
If your cabin air filter is clogged or overused, the interior of your car will smell awful. The car will collect all the dust that gets lodged in the filter when it is filtering the air from the outside, which will eventually produce an unpleasant smell.
Allergy symptoms
If you have a bad or overused cabin air filter, you may notice that your allergies are getting worse while driving if you are sensitive to certain particles or may even be allergic to them.
As we previously discussed, the cabin air filter will trap any dust and particles from the outside air. They can enter the car and create allergy symptoms even though they are on the other side of the filter.
Increased noise levels of the fan
Your car’s AC system should basically make a gentle noise as air escapes the vents when it is turned on. Your air cabin filter and AC system are in good shape if the fan makes a soft, healthy noise. However, if the fan’s noise level starts to rise, the filter is likely to start failing.
In addition to making it harder for the air to enter and be effectively filtered, big particles that enter the air cabin filter also create a lot of noise as the air passes through. As a result, you would always hear a loud noise when turning on the fan in your car.
Furthermore, when air is trying to flow through the cabin air filter but is being severely hampered by a clogged or failed filter, it will make weird noises. It can make a whistling or screeching noise.
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How much does the cabin air filter cost?
Changing the cabin air filter often only requires a few hours of labour, and it can usually be completed in under 30 minutes. The cost to change a cabin air filter depends on the model of the car and the labour costs, and it ranges from $40 to $100 on average.
Additionally, if you go for a charcoal filter or a regular one, a cabin air filter can range in price from $20 to $50. If you decide to purchase a charcoal cabin air filter instead of a standard one, the cost may vary slightly. People with allergies would benefit more from charcoal filters because they filter the air more thoroughly.
Advantages of a cabin air filter
- The cabin air filter helps to purify the outside air coming into the car’s interior.
- Most bacteria can be removed.
- Allergens like pollen, mold, dust, and dust mites can be removed with the help of the cabin air filter.
Disadvantages of the cabin air filter
- The cabin air filter cannot prevent bad odours from getting into the car’s interior.
- There may be larger populations of microorganisms since the filter might capture organisms that can breed or reproduce.
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Conclusion
A cabin air filter is a critical yet often overlooked component of a vehicle’s HVAC (heating, ventilation, and air conditioning) system. It is responsible for filtering out dust, pollen, smog, mold spores, and other airborne contaminants from the air entering the passenger cabin.
By maintaining clean air inside the vehicle, it improves air quality, reduces allergens, and ensures optimal performance of the HVAC system. Regular replacement of the cabin air filter—typically every 12,000 to 15,000 miles—can lead to a healthier driving environment and better airflow through vents.
FAQs on Cabin Air Filter
What does a cabin air filter do?
It cleans the air that enters your vehicle’s cabin by trapping dust, pollen, pollution, and other airborne particles.
How often should I replace my cabin air filter?
Typically every 12,000 to 15,000 miles or once a year, but always refer to your vehicle’s manual.
What are the symptoms of a dirty cabin air filter?
Reduced airflow from vents, unpleasant odors, increased dust inside the cabin, and noisy HVAC operation.
Is the cabin air filter the same as the engine air filter?
No. The cabin air filter cleans air entering the cabin, while the engine air filter cleans air entering the engine.
Can I replace the cabin air filter myself?
Yes, in most vehicles it’s a simple DIY task usually located behind the glove box or under the dashboard.
Does a clean cabin air filter improve fuel economy?
Not directly, but it helps maintain HVAC efficiency, which can indirectly reduce strain on the engine in certain conditions.