How Polluted is Indoor Air?

The U.S. EPA considers indoor air pollution a high priority health risk and estimates it to be 4 to 100 times more polluted than outdoor air. We usually spend about 90% of our time indoors, more than half of this time in our homes. It makes sense to breathe fresh, clean filtered air to reduce indoor air pollution and minimize allergies, asthma and other diseases. Everyday we typically breathe in two heaping tablespoons of airborne particles that our bodies must process and discharge. Medical experts agree that the smallest of these particles cause the greatest problems.