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What are the different types of cabin air filters?

Cabin air filters keep pollutants out of your vehicle’s ventilation system to help improve the quality of the air you breathe while you drive. But not all filters are created equal. Certain filters like PurolatorBOSS® Premium Cabin Air Filters with Febreze Freshness are designed to be top-of-the-line filters for the ultimate travel experience. Before you choose what to install in your vehicle, know what the different types of cabin air filters are and how they function.

There’s a good chance your vehicle has a cabin air filter (95% of new cars sold have them). A cabin air filter should be replaced every twelve months or more frequently in harsh or dusty environments for maximum effectiveness. Clogged cabin air filters cause the re-circulated air in your car to be dirty and unpleasant for you and your passengers. Plus, a clogged filter blocks airways and puts undue stress on your vehicle’s HVAC system. Here’s a rundown on the different types of cabin air filters to reference when you’re ready for replacement.


There are three levels of cabin air filters:

Level 1 - particulate filter

As you drive, inert allergens and irritants like pollen, dust, dirt and soot can make their way into your cabin. Particles are not only irritating, but they can also aggravate seasonal allergies or respiratory problems. Purolator® Premium Cabin Air Filters block 96.5% of these fine particles to provide fresher, cleaner air. Whether you drive a car, truck or SUV,  replacing your cabin air filter is easy and should be done regularly to make your ride more comfortable.

Level 2 - activated carbon filter

Activated carbon cabin air filters provide the same protection against inert allergens and irritants, while also providing odor control. Odors from outside your vehicle can travel inside. If you drive past a farm with newly dropped fertilizer or a busy factory, you’ve no doubt experienced what outside odors can do to your commute. An activated carbon cabin air filter blocks and controls odors. A PurolatorONETM Cabin Air Filter contains activated carbon which eliminates odors. Make your commute more pleasant with a cabin air filter that controls odors.

Level 3 - anti-microbial filter

The highest level of cabin air filter is ideal for maximum cabin air filtration. Along with the same inert allergen protection and odor control of level 1 and 2 filters, level 3 filters add a third level of protection. There’s no better sign that it’s time to replace your cabin air filter than a musty, unpleasant odor. A smell like that usually indicates there’s mold growing on your filter. The most effective cabin air filter has an antimicrobial layer that will prevent bacteria and mold growth on the filter. PurolatorBOSS® Premium Cabin Air Filters with Febreze Freshness are made with electrostatically charged, micro-woven fiber layers that remove even microscopic particles, providing up to 99% Dirt Removal Power™. This triple-layer protection effectively captures fine dust particles, inert allergens and virus aerosols that have been known to cause respiratory issues. Plus, it’s unscented so you only get fresh, clean air.

Get the best possible cabin air filter for your vehicle
You have a lot of choices when it comes to purifying the air in your vehicle, but PurolatorBOSS Premium Cabin Air Filters provide the highest level of protection from irritants, odors and mold. You spend hundreds of hours a year in your vehicle, so make sure that time is as comfortable as 


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