A lot of us take for granted maintaining the quality of air we breathe at home. This could greatly affect our health (especially the kids) if not given attention. It's one of the leading causes allergies and other bronchial complications. Allergies and bronchial complications could easily be prevented. Take time to check and change your furnace filters. Doing so will ensure a perfectly functioning furnace and clean air. It always helps to be cautious and preventive rather than be sorry and shell out a ton of cash for treatments.