How Often Should Air Filters and Cabin Air Filters Be Replaced?
3 Answers
The replacement intervals specified in the vehicle maintenance manual are as follows: the air filter should generally be replaced every 20,000 to 60,000 kilometers. If the vehicle is driven less frequently, it is recommended to replace it every 12 months. The cabin air filter should be replaced approximately every 10,000 kilometers. If it is not replaced for a long time, it will affect the performance of the air conditioning system and the health of the vehicle occupants. Cabin Air Filter: The cabin air filter is an important component of the vehicle's air conditioning system. Its primary function is to filter out bacteria, PM2.5, moisture, pollen, dust, and other particles from the air. It is recommended to inspect both the air filter and cabin air filter during each maintenance service. The location of the air filter varies depending on the intake design and engine structure, but it is generally located in the air cleaner on the engine intake pipe. The cabin air filter is typically installed under or inside the glove compartment on the passenger side, though in some models, it may be located under the windshield in front of the passenger seat. Function of the Cabin Air Filter: It absorbs fine particles, reduces respiratory discomfort, minimizes irritation for allergy sufferers, and protects the air conditioning cooling system. Without the cabin air filter, these particles could enter the cabin, contaminating the air conditioning system, reducing cooling efficiency, and causing health issues such as allergic reactions, lung damage, and irritation from ozone exposure. Unpleasant odors may also affect driving safety. Dirty Cabin Air Filter: A clogged cabin air filter can restrict airflow, reduce cooling efficiency, increase fuel consumption, and create noise. It may also shorten the lifespan of the air conditioning system. Accumulated contaminants on the filter can breed bacteria and mold, posing health risks to passengers and potentially leading to serious illnesses. Air Filter: Also known as an air cartridge, air cleaner, or air element, it is a type of filter used in engineering vehicles, automobiles, agricultural machinery, laboratories, sterile operating rooms, and other precision environments. Function of the Air Filter: It filters out airborne particles, ensuring clean air enters the engine cylinders and preventing dust from accelerating wear on piston assemblies and cylinders. Dirty Air Filter: Using a dirty air filter can restrict engine airflow, leading to incomplete fuel combustion, unstable engine performance, reduced power, and increased fuel consumption. Therefore, it is essential to keep the air filter clean or replace it promptly.
I've been driving an SUV for commuting in the suburbs, changing the air filter every 12,000 miles or so to protect the engine and avoid dust clogging that reduces fuel efficiency; the cabin air filter needs to be replaced every year, especially during pollen season, to ensure better air quality inside the car and eliminate odors. Doing it yourself is simple—just buy a matching filter online, remove the housing, and insert it. It saves money and hassle while extending engine life. Don’t delay too long, or poor cabin air quality could harm your health.
I live near the industrial area of a big city where the roads are dusty. I change the engine air filter approximately every one and a half years to keep the engine running smoothly. The cabin air filter is replaced more frequently, every ten months, to prevent respiratory issues. Last time, when I didn't replace it in time, the car's air conditioner emitted a foul odor, causing my child to sneeze severely. So now, during quarterly maintenance, I ask the technician to check it for peace of mind. When the air conditioner feels like the airflow is weak, it's a signal that the filter needs replacing. Usually, I keep the windows closed and use the outside air circulation to make the filter last longer.
