How does proper ventilation contribute to indoor air quality?

Proper ventilation plays a crucial role in enhancing indoor air quality primarily by reducing indoor pollutants. When a space is well-ventilated, fresh outdoor air is introduced and circulates within the indoor environment. This process helps to dilute and remove harmful substances like volatile organic compounds (VOCs), carbon dioxide, mold spores, and other allergens that may accumulate indoors due to cooking, cleaning, or the use of certain building materials and furnishings.

Furthermore, effective ventilation helps to control humidity levels, which can also mitigate the growth of bacteria and mold. By continuously exchanging stale indoor air with fresh outdoor air, the concentration of indoor pollutants is kept at a lower level, leading to a healthier living environment. This makes it evident that the primary benefit of proper ventilation directly ties to the overall quality of air that occupants breathe.