Kitchen exhaust ventilation, properly ducted to the outside, is an essential component of good indoor air quality (Figure 1). Research has identified kitchens as the primary location where most harmful pollutants are generated in the home. During the cooking process, moisture and pollutants are released into the home, from the cooking fuel source and from the ingredients themselves. The health effects of cooking pollutants (such as particulate matter, formaldehyde, and NO2) are well established. A helpful summary of research on this issue is published by the California Air Resources Board.
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