EPA sources indicate we spend approximately 90 percent of our time indoors. For many people, the risks to health may be greater indoors than outdoors. And consider that most homes have multiple sources of pollutants that contribute to indoor air pollution.
Allergy sufferers are Especially Vulnerable to Indoor Air Quality
Hay fever and seasonal allergies can be triggered by breathing pollen, dust, molds, spores or pet dander. Some of these particles are too small to be caught by traditional disposable furnace filters.