Cabin filters

To improve air quality inside the vehicle, Valeo offers a complete range of cabin filters that trap impurities in the air entering the cabin and reduce the concentration of pollutants in the confined space inside the vehicle.

There are three levels of filtration:

• Particle filters: these capture particles and dust larger than 0.1µm (e.g. pollen, soot, tire wear dust).
• Combined filters: as well as trapping dust, these filters capture unpleasant smells and harmful gases (NOx, ozone, NO2, butane, toluene, SO2, Butadiene, etc.) using an active carbon layer.
• Combined filters with additional functions: Valeo will shortly launch in Europe a new combined filter with anti-allergen properties that neutralizes allergens transmitted by pollens using a natural surface treatment of the filter medium (polyphenol). This filter offers additional comfort to individuals susceptible to poor air quality (for example people with allergies).

Drivers are increasingly concerned about atmospheric pollution and demand high air quality level, especially the air they breathe inside their vehicle. This air affects their health, comfort and well-being. Studies show that pollution inside a vehicle can be two to five times higher than outside! Drivers and passengers are constantly exposed to this pollution.

To reduce the concentration of pollutants inside the car, most HVAC units comprise a filter that cleans the air drawn in from outside to the vehicle cabin.

Valeo’s cabin filters guarantee enhanced comfort for the driver and passengers. To ensure the ventilation system functions properly, we recommend changing the cabin filter regularly. When dust, soot and pollen particles accumulate, this leads to a loss of effectiveness (the filter becomes clogged up with particles and air can no longer pass through), so it is necessary to change the filter (on average once a year, or every 15,000 kilometers, depending on the driving environment).

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Mainly found in cars with air-conditioning, these filters prevent the cabin environment from becoming contaminated by external particles and exhaust fumes from other vehicles when air enters the car.

A filter is made up of three or four different layers:

• a support layer made of a structural material such as polymer, to provide rigidity and stability,
• an adsorbent layer made of non-woven material containing active carbon particles,
• one or two layers of filtering material (porous pleated filter paper that traps particles and dust of varying sizes).

The choice of filtering materials is always made in line with specifications from the automaker as well as installation conditions.