Ventilation is a crucial aspect of maintaining a healthy indoor environment, and natural ventilation plays a key role in ensuring the air we breathe is fresh and clean. One effective way to harness the benefits of natural airflow is through the use of ventilation fans. While modern air conditioning and mechanical ventilation systems have their place, natural ventilation fans offer a more eco-friendly and sustainable approach to improving indoor air quality. In this article, we will explore the benefits, functionality, and importance of natural ventilation fans for residential and commercial spaces.