The quality of the air we breathe indoors has become an increasingly important environmental concern. Following are facts that have been determined by recognized authorities in the fields of health and air quality:

Facts:

* Most people spend 60% to 90% of the time indoors. (American Lung Association)
* 50% of all illnesses are either caused by, or agravated by, polluted indoor air. (American College of Allergists)
* The levels of some hazardous pollutants indoor air has been found to be up to 70 times greater than in outdoor air. (UPEPA)
* Studies have shown that two out of three indoor air quality problems involve the HVAC system.
* More than 50 million Americans suffer from Allergies.
* One out of six people who suffer from allergies do so because of the direct relationship to fungi and bacteria in air duct systems. (Total Health and Better Health Magazine)
* 10-12 million Americans suffer from Asthma (American College of Allergists)
* Children and the elderly are especially affected by polluted indoor air. (Department of Consumer Affairs)
* Legionnaire's Disease was spawned in air conditioning ducts. It killed 29 people in 1976. (American Lung Association)
* In the Summer of 1988 at least seven people died in Los Angeles area from Legionnaire's disease. (Modesto Bee 9/22/88)
* It is estimated that poor air quality directly results, on a annual basis, one billion in medical costs and $60 billion in employee sick leave and lost production.