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Why You Should Replace Your Car’s Cabin Filter (And How Often)
- PW Auto Repairs
- May 28
- 2 min read
When it comes to car maintenance, most people think about oil changes and tyre checks - but there’s one small part that plays a big role in your comfort and health: the cabin filter.
What Is a Cabin Filter?
The cabin filter (also known as the pollen filter) is a key part of your vehicle’s ventilation system. It filters out dust, pollen, pollution, mould spores, and even exhaust fumes before the air reaches the inside of your car.
In short, it’s your first line of defence against poor air quality in the cabin.
Why Replacing It Matters
Improves Air Quality
Over time, the filter becomes clogged with dirt and debris, reducing its ability to block harmful particles. A clean filter ensures you and your passengers breathe cleaner, fresher air.
Prevents Musty Smells
A dirty cabin filter can trap moisture and lead to unpleasant, musty odours inside your car. Replacing it helps keep things smelling fresh.
Boosts A/C and Heater Efficiency
When airflow is restricted by a clogged filter, your car’s heating and air conditioning systems have to work harder, which can reduce their performance and increase energy use.
Protects Interior Components
A clean filter helps prevent dirt and dust from building up inside the system, which can protect the blower motor and improve the longevity of your vehicle’s heating and air conditioning system components.
How Often Should You Replace It?
Most manufacturers recommend replacing your cabin filter every 12,000 to 15,000 miles or once a year—whichever comes first.
However, if you:
Drive in a city or high-pollution area
Have allergies
Frequently drive on dusty or rural roads
...then you may want to replace it more frequently (every 6–9 months)
Quick, Affordable, and Worth It
Cabin filter replacement is a simple, low-cost job that can make a big difference to your comfort, air quality, and even your car’s long-term health.
On most vehicles it should be done with the annual service, but can be done with an air conditioning service or as an independent job.
For more information, please call us on 01636 550852
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