According to the EPA, concentrations of toxic pollutants can be up to one hundred times greater inside a home than outside, even in our smoggiest cities. Poor ventilation in the home can lead to stuffy air and a build-up of unpleasant odors, irritating pollutants and potentially harmful gasses such as radon or carbon monoxide. As homes are built tighter with better windows, more insulation and higher-efficiency heating and cooling systems, the need for adequate ventilation becomes even more important.

The Usual Suspects:

Odors - emitted from litter boxes, trash cans, laundry hampers, cooking, smoking, paints and solvents.

Gases and vapors - emitted from new carpeting, building materials, cleaning supplies, candles, pesticides, personal care products, glues and adhesives.

Stale and stuffy air - a result of today's energy efficient "tight" building techniques.