According to the EPA research, on average, the air inside our homes and offices typically contain levels of pollutants 2-5 times higher than the air outside and in extreme cases can be 100 times more contaminated. The average American spends about 90% of their time inside. It is no wonder that the EPA ranked indoor air pollution as one of the top five environmental risks to public health. The National Academy of Sciences estimated that indoor air pollution costs our country between $15 and $100 billion each year in related health care costs.
