How can ventilation with fresh outdoor air benefit indoor air quality?

Ventilation with fresh outdoor air plays a crucial role in improving indoor air quality primarily by diluting indoor air contaminants. This process helps to lower the concentration of pollutants such as volatile organic compounds (VOCs), carbon dioxide, allergens, and other harmful substances that may accumulate in enclosed spaces. When fresh air is introduced into an indoor environment, it effectively mixes with the stale air, reducing the level of contaminants and promoting a healthier air environment.

This dilution effect is particularly important in spaces where indoor air pollutants may originate from several sources, including building materials, furniture, cleaning supplies, and personal activities. Ensuring that ventilation systems are in place to bring in outdoor air can significantly enhance the quality of the air we breathe indoors, leading to improved comfort and health outcomes.