Why is "ventilation" significant in residential buildings according to building codes?

Ventilation is significant in residential buildings primarily because it ensures adequate air quality and circulation for occupant health. Proper ventilation helps to eliminate indoor pollutants, moisture, and stale air, which can lead to health issues such as respiratory problems and allergies. Building codes often stipulate requirements for ventilation to create a safe and comfortable living environment. Adequate airflow can also prevent issues like mold growth and condensation, which can compromise both occupant health and the structural integrity of the building over time.

While other aspects, such as exterior design or heating efficiency, may be influenced by ventilation considerations, they do not capture its primary purpose as outlined in building codes. Similarly, while good ventilation practices can lead to cost efficiencies by reducing long-term repair needs or health-related expenses, this is not the core reason behind why codes emphasize ventilation standards. The focus remains on maintaining healthy indoor air quality and ensuring that spaces are livable and safe for occupants.