To improve indoor air quality, what is the recommended approach for the use of outdoor air?

Increasing outdoor air ventilation is widely recognized as an effective method for improving indoor air quality. This approach helps dilute indoor air pollutants, which can originate from various sources such as household chemicals, mold, and allergens. By allowing outdoor air to enter a building, you introduce fresh air that can reduce the concentration of irritants and contaminants in the indoor environment.

In addition, increased ventilation can help control moisture levels, which is important in preventing the growth of mold and mildew—common contributors to health issues and discomfort. This method can also enhance overall occupant comfort, as fresh air tends to have a positive psychological effect.

In certain contexts, simply minimizing outdoor air intake, using outdoor air only during specific times, or restricting outdoor air can lead to poorer air quality. These approaches could result in the accumulation of indoor pollutants and inadequate air exchange, adversely affecting health and well-being. Thus, increasing outdoor air ventilation is a proactive strategy supported by various guidelines and health recommendations.