Filters are something you change out on your HVAC system on a regular basis, perhaps monthly. Did you know that your vehicle also has air filters? They need to be changed out as well and if they aren't, problems can arise. While the cabin filters aren't going to impact whether or not your vehicle gets you to work and back, they are an important part of a vehicle's maintenance and they can give you some uncomfortable results.
The Cabin Filter's Job
Like an air filter at home, the cabin filter takes the contaminants, like dirt, dust, smoke, exhaust fumes, and other such things from the air so those things aren't forced through the vents and into your vehicle. They also block debris, like bugs, rodent droppings, and other things you definitely don't want in your car.
The filters are pleated and are made of fiber-like material and they will build-up dust and other debris, which causes them to need changing in order to work efficiently. t is best to change these filters every 12,000 to 30,000 miles, but they don't generally cost very much and they are worth the effort.
Results From Old Filters
If you spend a lot of time in your vehicle, and you don't change out the filters, you could see some health issues. If you have allergies, you might suffer more from those when you are driving. You might also find yourself sneezing more, whether you have allergies or not. The HVAC system won't work as well since it is trying to force air through blocked filters. And you may notice that your windows fog over a lot easier than they did in the past. Worst of all, you might notice bad smells coming from the vents. All sorts of things can get caught up in the filters and once those things sit there awhile, they won't be pleasant.
Since air filters are easy to change out, and don't cost much, it's something you can do with ease when you get an oil change. Have the filters checked to see when they might need replacing next.