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What is a Cabin Air Filter?
The cabin air filter is a high particulate filtration medium that is attached to the outside air intake of your vehicle's ventilation system. This device helps to improve air quality and filter out pollution from the air that circulates inside the vehicle. Most air filters are made from a pleated paper construction, using a variety of different filtration media. Some are a cotton and paper blend, while others are basically extremely miniaturized paper filters similar to the air filter of your car's intake system. There are some that are just a formed and shaped cotton filter in a cartridge.
The cabin air filter is sometimes confused with an internal combustion air filter. The internal combustion air filter is the filter under your hood that prevents particles from getting into the engine. A driver may encounter the internal combustion air filter as a service recommendation at an oil change shop. That's because if the air filter gets clogged or otherwise compromised, it can affect engine performance.
It's important to recognize the distinction between these two very different types of air filters. When buying cabin air filters, you're looking for something that's going to help improve the air that you will be breathing as a driver or passenger in the vehicle. It's not so much part of the vehicle's performance gear as a health and safety device. Drivers can consider buying "green air filters" that are more sustainable and include more attention to what the inhabitants of a vehicle will be breathing.
Where is the Cabin Air Filter Located?
The cabin air filter, or air conditioning filter, is located in different places in different cars. On some cars these are easy to locate, remove and change. On others, they are more difficult to remove and change. They will all be in the air conditioning/vent system after the fan. Most of these can be found just inside a small inspection door in the cabin side of the fan housing. On most cars this will be down by where the front seat passenger's feet are located. This area is sometimes referred to as the foot well. Refer to your car's manual for the exact location.
Is the AC Filter the Same as the Cabin Air Filter?
Yes. Some manufacturers call these filters AC filters (or air conditioning filters), while others call them cabin air filters. Either way, they are the same thing and they perform the same function of removing dust and other allergens from the air entering the passenger compartment.
Is Changing Your Cabin Air Filter Really Necessary?
A dirty cabin air filter can cause your air conditioner to run less efficiently, which will waste horsepower. It will also decrease the amount of air flow into the passenger compartment. Both of these conditions will result in higher temperatures in the passenger compartment and the air conditioner having to work harder than it really needs to. Changing the cabin air filter in your vehicle is not only important from a maintenance perspective, but also helps ensure the safety of the passengers in your vehicle. The cabin air filter is a very important part of your car's ventilation system and removes many common pollutants from the air, thus protecting the passengers inside the vehicle.
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