25/06/2026
As summer heats up, drivers must ensure their air conditioning is fully operational. One crucial aspect of this is maintaining a clean cabin filter.
Today's vehicles boast various technological features and comforts that enhance the driving experience. Yet, having cool air circulate inside the vehicle on a hot day is vital for numerous reasons.
Let's delve into everything you need to understand about cabin and pollen filters.
What's a cabin filter?
Air conditioning is key for maintaining a comfortable temperature in your vehicle during warmer seasons, benefiting you and your passengers.
The cabin filter is within the AC system. This component cleans the air passing through the vehicle's HVAC (Heating, Ventilation, & Air Conditioning) system, which manages heating and ventilation.
Its primary role is to sift out dust, mould spores, and other airborne pollutants that could cause issues for occupants or harm the vehicle.
These filters are typically located behind the dashboard, beneath the glove box, or near the windshield under the bonnet, depending on the vehicle's make, model, and age.
Cabin filters enhance air quality and prolong the HVAC system's lifespan.
What about a pollen filter?
A pollen filter, a type of cabin filter, is designed to trap pollen and other allergens inside the vehicle.
It can benefit drivers prone to hay fever during high pollen seasons.
This filter can absorb allergens and odours present in the vehicle due to having an activated carbon layer.
Key Signs of a Faulty Cabin Filter:
Given that cabin filters aren't lifelong components, it's crucial to recognize signs indicating replacement is necessary:
1. Reduced or erratic airflow
2. Inability to adjust temperature effectively
3. Unpleasant odours emanating from the HVAC system
4. Fogged-up windshield
Checking and replacing your cabin air filter should be part of routine car maintenance, possibly during an annual service appointment.
How long do cabin filters last?
Typically, cabin filters in a vehicle's HVAC system endure up to 15,000 miles or should be replaced at least once every 18 months.
However, durability varies due to factors like frequency of use, ambient temperature and humidity, filter quality, HVAC system quality, pollutant and pollen levels, dust and dirt accumulation, and air conditioning usage.
How to Replace Your Cabin Filter:
To replace the cabin air filter, locate it based on your vehicle's make, model, and year. It's often situated under the dashboard, beneath the glove box, or in housing near the windscreen under the hood:
1. Ensure the engine is off.
2. Remove the filter cover with a screwdriver or by unclipping it.
3. Take out the old filter.
4. Clean the housing to enhance the new filter's longevity and prevent issues.
5. Install the new cabin filter correctly.
6. Reattach the filter cover securely.
7. Test the HVAC system post-installation. If issues persist, visit a trusted garage.
How Frequently to Change Cabin or Pollen Filters:
Manufacturers typically specify in the vehicle manual when to change these filters. However, as a general rule, consider replacing them annually, every 18 months or every 10,000 to 15,000 miles.
