What is a primary requirement for a home to maintain good indoor air quality?

A well-insulated and energy-efficient design is essential for maintaining good indoor air quality because it helps control the flow of air into and out of the home. Proper insulation reduces drafts and minimizes the infiltration of outdoor pollutants, which can worsen indoor air quality. Additionally, an energy-efficient design often includes mechanical ventilation systems that provide a controlled means of introducing fresh air while filtering out contaminants. This approach not only avoids excessive energy consumption but also ensures that the indoor air remains fresh and free of harmful substances.

While options such as large windows for ventilation, the use of air purifiers, and natural wood materials can contribute to better indoor air quality, they do not singularly address the overall management of air exchange and thermal conditions within the home. For instance, large windows might provide light and some ventilation, but they can also lead to drafts and energy loss if not properly designed. Air purifiers can improve the quality of air being circulated, but they do not resolve issues related to the overall air exchange. Natural wood materials, while often chosen for their aesthetic and ecological benefits, do not directly influence the mechanisms of air quality maintenance. Thus, a comprehensive approach that includes a well-insulated and energy-efficient design stands out as a primary requirement for achieving and sustaining good indoor air