In today's world, with growing concerns about air quality and environmental sustainability, the need for natural ventilation systems has become more prominent. Natural ventilation offers an eco-friendly way to circulate air within buildings, ensuring a healthier and more comfortable indoor environment. Two key components of such systems are fans and filters, which play an integral role in maintaining air quality and promoting efficiency. This article explores how fans and filters function within natural ventilation systems and the importance of their integration for both comfort and health.