Changing a furnace filter regularly will improve your heating in the winter and your air conditioning in the summer.

Even in the warmer months of the year, you should regularly monitor your furnace filter's condition -- and replace it as needed -- to keep your family safe and your furnace in good working condition.

How often should I swap out my furnace filter, and which types of furnace filters are best? A furnace filter removes dust, dander and other large particulates from the air in our homes when either the ...