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Cabin Air Filter: What Is It & What Does It Do in a Car?

Fernando West
Feb 24, 2022
Before getting into the details, let’s understand what does a cabin air filter do. Most newfangled vehicles are equipped with a cabin air filter, which comes in handy for eliminating harmful pollutants like dust and pollen. 
In other words, a cabin air filter keeps the air you breathe inside a vehicle clean and fresh. Car and Driver experts suggest this air filter usually sits behind the glovebox. Even before air begins circulating in the car, it passes through the cabin air filter. 
As a result, the contaminants within the air get trapped before polluting the air you breathe. Since it protects the passengers from harmful pollutants in the air they breathe, a cabin air filter plays a vital role in the heating and cooling system of any vehicle.
what does a cabin air filter do

Types of Air Filters

Most vehicles come with four types of filters, according to a report by DriversEd.com. These include air filters, fuel filters, oil filters, and cabin air filters. 
For those who are unaware, the air filter and cabin air filter ensure the driver, as well as the passengers, breathe clean air. Also, it ensures that the air entering the engine is clean.

How Does Air Filter Work in a Car

It is no secret that clean air is important when it comes to running your vehicle properly. That's where the cabin air filter comes into the picture. The filter facilitates a seamless transmission of clean air to the engine of your vehicle. 
Likewise, a vehicle's ventilation system heavily relies on the cabin air filter when it comes to a continuous flow of clean air. Furthermore, the cabin air filter ensures that exhaust gases, bacteria, pollen, dirt, and dust do not enter your car's HVAC system. 
Aside from that, debris, leaves, and bugs do not end up clogging the system, thanks to the cabin air filter in your car. By keeping the air inside a vehicle clean, the filter enables the driver and the passengers to breathe easily. This is quite a notable feature, especially because it prevents seasonal allergies during Spring.

Why Should You Replace Cabin Air Filter

If you are wondering why replacing your vehicle's cabin air filter is important, then here are the details of exactly why the filter needs to be replaced when you notice any of the aforesaid signs. 
When the fan is running, a myriad of contaminants gets pumped into the cabin. The cabin air filter eliminates these contaminants. So, these filters understandably get clogged up with all sorts of debris and dirt.
A dirty cabin air filter will obviously not effectively clean the air in your vehicle. On top of that, it can obstruct the airflow into the cabin.
It is no secret that having a cabin air filter is highly beneficial, but the market is teeming with a wide range of filters, making it hard for you to choose from. If you are looking for a quality cabin air filter, you can head straight to place your order.

How Do I Know If I Need to Replace My Cabin Air Filter?

Despite the lack of warning light, there is a slew of unmissable signs that suggest it is time for you to replace your cabin air filter. One of the most notable signs is lowered air circulation inside the passenger compartment.
Moreover, lowered air conditioning and heating performance is a sign that you need to replace the filter in your car. Likewise, you'd notice a stale odor in your car's cabin when it is time to replace your filter.
Lastly, the cabin air intake ducting could start producing a strangle whistling sound, indicating that the filter needs to be changed. You can replace the cabin air filter yourself. Alternatively, you can hire a trusted mechanic to do it for you.

Additional Tips to Keep Pollen and other Allergens out of Your Vehicle

Aside from replacing filters from time to time, there are some additional steps that you can take to restrict allergens from entering your air and polluting the air. First off, it is imperative for you to vacuum mats, carpeted floors, and upholstery on a regular basis.
In addition to that, it is equally important to wipe down the dashboard, console, steering wheel, door panels, and other surfaces. Next, always make sure the weather-stripping of the windows and doors are properly sealed. To prevent mold from growing, clean up spills immediately.

Conclusion

While there are several ways to keep your vehicle allergy-proof, a cabin air filter is the most efficient method of ensuring the air within the car is clean. However, make sure you replace the cabin air filter every year or after every 12,000 miles.
Since most late-model vehicles come with a cabin air filter, the air flowing within the car is clean. The filter is designed to prevent harmful airborne material from entering the air that enters the vehicle via the air-conditioning system, ventilation, and heating. Having this filter is recommended especially if you have respiratory problems or allergies.
Hope this article helped you to understand what does a cabin air filter do and how does it work. If you want to buy quality cabin air filter replacement, then you should check out SuncentAuto.com.
By
Fernando West
"Fernando West is an automotive engineer with over 15 years of experience in powertrain and emission control system research and development. He specializes in EGR, DPF, and SCR system design, and now shares his expertise through clear, accessible, beginner-friendly how-to guides."
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