Common household dust is more dangerous than outside dust. (Environmental Protection Agency)

Exposure to dust mites, animal dander, and mold have been estimated to cause 200,000 emergency room visits per year. Damp or humid conditions lead to greater numbers of household dust mite.

"Coughs, sinus problems, fatigue and headaches are the early symptoms.  Asthma, reduced lung capacity, acute allergies and even cancer can follow.  The problems are caused by indoor air pollution..."(Atlanta Constitution)

House dust mites are one of the most powerful biological in triggering allergic reactions and can grow and thrive in damp, dark environments. (The United States Environmental Agency)

Indoor air can be up to 70 times more polluted than outdoor air. (Abatement Technologies)

The earliest symptoms of long term health problems from polluted illnesses do not appear until years after the initial exposure.

The effects of polluted indoor air are made worse by an inadequate supply of fresh outdoor air, such as in air conditioning and heating systems.  (The United States Environmental Protection Agency)

You inhale and exhale over 20,000 times per day. (The Dr. Dean Edell Show) And if you are home just 8 hours a day, that's over 6,500 potentially contaminated breaths, every day.

Breathing filthy, polluted indoor air has been directly linked to cause headaches, coughing, allergies, and even digestive problems. ("Sinus Survival: A Complete Guide to Caring for America's Most Common Ailment", Dr. Robert S. Ivker)

"Contaminated central air handling systems can become breeding grounds for mold, mildew, and other biological contaminants and can distribute these contaminants through the home." (United States Consumer Product Safety Commission, docket #EPA/400/1-66/004)

"Children, elderly people, and people with breathing problems, allergies, and lung diseases are particularly susceptible to disease-causing biological agents in the indoor air" (United States Department of Air and Radiation)