Home is where we feel comfortable and safe. Who would even think that the air we breathe could be affecting us? According to the Environmental Protection Agency, indoor air pollution is one of the top 5 in U.S. health risks. The levels of air pollution inside the home can be two to five times higher than outdoor levels. Household dust can contain mites, mold, mildew, pollen and animal dander – all of which is cycled through the central air system, which completely circulates the air in your home three to five times a day.