An exhaust fan is a mechanical ventilation device designed to improve air quality by expelling stale or contaminated air from an enclosed space. Typically installed in areas such as kitchens, bathrooms, or industrial settings, these fans work by drawing air out of a room and venting it to the outside, promoting the circulation of fresh, clean air. Exhaust fans play a crucial role in maintaining proper ventilation, preventing the accumulation of moisture, odors, and pollutants, thus contributing to a healthier and more comfortable indoor environment. These fans are available in various sizes and designs to cater to specific needs, providing an efficient and cost-effective solution for enhancing air circulation and overall air quality in diverse settings.