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The pollen filter (also known as cabin air filter) is a feature on most modern vehicles. It cleans the air that comes into the interior of the car and filters out pollen, dust and other airborne material.

Over time the pollen filter can become clogged with dust, leaves, twigs and residue from exhaust fumes. When the filter is blocked it can put unnecessary strain on your AC blower motor. Left clogged or blocked, it could potentially cause costly problems to your vehicle’s AC system.

What are the signs that my pollen filter needs to be changed?

The most common sign of a bad cabin air filter is poor air flow coming from the vents in your vehicle. A clogged or blocked cabin filter will restrict the amount of air that can pass through the AC system. You will notice that the vents will blow with less force, and may make more noise as the fan speed increases.

Another sign that it’s time to change your cabin air filter is a dirty or musty smell coming from your air vents. The smell may become more noticeable when the AC is turned on. Anyone with allergies or respiratory problems may also notice increased symptoms in the vehicle.

How Often Should Change My Pollen Filter?

Most vehicle manufacturers recommend replacing your cabin filter at least every 2 years. This could be more often if you live in highly polluted areas or drive in the city. If you drive a lot on unsealed roads or commute on roads with lots of trucks you may also need to get your filter changed sooner.

When the weather is cooler, this is usually the ideal time to replace your pollen filter. With the warmer weather comes an influx of pollen and allergens. Changing out your filter in Winter will have you prepared when Spring and Summer come around.


Replacing the pollen filter in your car is a simple job for a mechanic or auto electrician. The qualified technicians at Accelerate Auto Electrics can identify if your pollen filter requires replacing. Our techs can recommend the best type of filter for your requirements and even fit it for you.

If you are having a different type of problem with your Air Conditioning we offer a full range of AC services. Give our technicians a call on 1300 227 353 or email us for more information.

Has it been over 2 years since your last AC Service?