The cross-ventilation trick: How to position your fans like a pro this summer

dharasuta
Tuesday, April 14, 2026

Contrary to popular belief, simply blowing a fan out a window may not effectively cool a room. Research indicates that directing airflow inward can create a more beneficial "cup effect" for air circulation and evaporative cooling. For humid conditions, high-velocity air directly on skin is key, and strategic fan placement utilizing the "stack effect" can enhance DIY ventilation.