Electric fans are devices that create airflow by rotating blades powered by an electric motor. They are commonly used to cool indoor spaces, providing comfort during hot weather. Fans can be found in various types, including ceiling fans, table fans, and floor fans, each designed for specific uses and locations. These appliances work by drawing in air and pushing it out, helping to circulate the air in a room. Electric fans are energy-efficient compared to air conditioning systems and are often used in combination with them to enhance cooling. They are widely available in homes, offices, and public spaces.