Most people spend 60% to 90% of their time indoors. (American Lung Association)

20% of all illnesses are either caused by, or aggravated by, polluted indoor air. (American College of Allergists)

The levels of some hazardous pollutants in indoor air has been found to be up to 70 times greater than in outdoor air. (USEPA)

Studies have shown that two out of three indoor air quality problems involve the HVAC/Air Duct 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 Magazines)

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)

Most commercially available fiberglass furnace filters are less than 7% efficient. (ASHRAE)