A Quick Guide To Finding the Best-Rated Furnace Filter For Your Home If you’re a homeowner, you’ve needed to change your air filter from time to time. Replacing your air filter in time prevents dust, pollen, mold spores, and other contaminants from floating around in your home. This helps keep... A Quick Guide To Finding the Best-Rated Furnace Filter For Your Home If you’re a homeowner, you’ve needed to change your air filter from time to time. Replacing your air filter in time prevents dust, pollen, mold spores, and other contaminants from floating around in your home. This helps keep...