Cabin Air Filter Replacement

Your cabin air filter is the only barrier between the outside air and what you and your passengers are breathing inside the vehicle.

It traps dust, pollen, bacteria, mould spores and exhaust particles from other vehicles on the road before they enter the cabin.

When it blocks up or degrades, that protection disappears, and every trip becomes a lungful of whatever is in the air around you or what is growing in your filter.

At WestCoast Auto Air Conditioning Mandurah, we supply and fit replacement cabin air filters on most makes and models — no booking required for most vehicles.

What's Included...


- Cabin air filter supply and fit

- Visual inspection of the vent and filter housing

- No booking required for most vehicles

- Walk-ins welcome

When Should You Replace Your Cabin Air Filter?

Most manufacturers recommend replacing your cabin air filter every 15,000–20,000km or once a year, whichever comes first.

Signs it needs replacing sooner include:

- Reduced airflow through the vents even on high fan speed

- Musty or stale smells when the AC or heater is running

- Increased dust inside the cabin

- Allergy symptoms worsening while driving

Common Questions People Ask About Cabin Air Filter Replacement

How do I know if my cabin air filter needs replacing?

The most common signs are reduced airflow through the vents, musty smells when running the AC or heater, or increased dust inside the cabin. If it hasn't been replaced in over a year or 15,000km it's worth getting it checked.

Do you supply the filter or do I need to bring one?

We supply and fit — just bring your vehicle in and we'll take care of the rest.

How long does it take?

Most cabin air filter replacements are completed in under 30 minutes.

Do I need to book in advance?

No — walk-ins are welcome for most vehicles. If you want to guarantee a time, you're welcome to call ahead. **During the summer months, it is best to book in to make sure we can help**

Does a blocked cabin filter affect my AC performance?

Yes — a blocked cabin filter restricts airflow through the system, which reduces cooling and heating performance and makes the fan work harder. Replacing it regularly keeps the system running efficiently.

Do you replace cabin filters on all vehicles?

We carry filters for most makes and models. Give us a call if you're unsure whether we can help with your specific vehicle.

AU 068456 | MRB 12779