If not properly managed, the air inside of your home becomes polluted with many of the same contaminants as outside. According to the American College of Allergy, Asthma, and Immunology, dirty AC filters may contribute to increased difficulty with allergies or asthma while inside.
Your air conditioning filter is designed to catch particles such as allergens, dust, and dander. If you don’t regularly change your filter, it will no longer be catching these particles anymore and they will begin to build up. You’ll then be inhaling all of these particles, which can potentially aggravate allergies or asthma.
Changing the filter on your AC unit is simple. Some filters are housed behind the primary register, while others are within the unit. Once you have located the filter, look at the sides of it. The size of the filter will be listed so you can buy a replacement. You could also bring the old filter to the store. An employee should be able to help find the right replacement.