Auto HVAC System Problems can be caused by a dirty cabin air filter, even if it doesn't directly affect the engine. The filter will reduce the amount of air flowing through the vents, making the AC fan motor work harder and potentially burn out. It also consumes more energy, putting the alternator to the test. Plus, it won't capture particles efficiently, leading to a dirty and smelly cabin.
The most serious risk is an acute failure of a major vehicle safety system that will be very expensive to repair. The cabin air filter is usually located behind the glove compartment or under the front windshield from the engine compartment. It should be replaced every two years or every 30,000 miles (48,000 km). If you notice any unusual odors coming from your vehicle's ventilation grilles, it may be a sign that the cabin air filter needs to be changed.
A great function of the cabin air filter is to maintain airflow inside the vehicle and help eliminate fog lying on windows. It also helps keep pollutants thrown on the road by other vehicles, such as diesel fumes and burnt oil, out of your car. Allergens are also filtered out before they enter the cabin. The cabin air filter price may vary slightly depending on whether you choose to buy a carbon cabin filter or a standard one.
Today, many brands sell cabin air filters with the idea that no one wants to spend time in a smelly car if they can help it. Your car was built to last longer with all of its components in place, including the cabin air filter.