Exhaust fans are devices designed to remove stale air, moisture, and odors from indoor spaces. They work by drawing air out of a room and expelling it outside, which helps improve air quality and reduce humidity levels. Commonly found in kitchens and bathrooms, these fans can prevent mold growth and keep spaces feeling fresh. These fans come in various sizes and styles, including wall-mounted and ceiling-mounted options. They are often equipped with timers or sensors to operate automatically when needed. Proper installation and maintenance of exhaust fans can enhance their efficiency and prolong their lifespan.