News & Insights

Natural Ventilation

20 May 2026

This week’s IN2 Academy explored the role of Natural Ventilation in sustainable building design, focusing on how smarter airflow strategies can improve occupant comfort, energy performance and building resilience. The session covered key concepts including stack effect, cross ventilation, atrium behaviour and passive cooling strategies such as double skin façades, earth tubes and night ventilation, highlighting how effective airflow design supports healthier, lower-energy buildings.

Academy

This week’s IN2 Academy focused on one of the most important, and often underestimated aspects of sustainable building design: Natural Ventilation.
We explored how smarter airflow design can ensure:

- Occupant comfort

-Energy performance 

- Building resilience

From stack effect and cross ventilation, to atrium behaviour and passive cooling strategies, the session looked at how buildings can work with natural airflow rather than against it.

One key takeaway we found is good ventilation design is far more than just opening windows, airflow behaviour is influenced by pressure differences, building geometry, occupancy, temperature and external conditions.

We also explored passive cooling approaches including:
- Double skin façades
- Earth tubes
- Night ventilation
- Cross ventilation

As buildings move toward lower operational energy and greater climate resilience, understanding airflow design is becoming increasingly important in creating healthier, more efficient spaces.