No, a fan does not add heat to a room. In fact, it helps cool down a room by circulating air and creating a breeze. Fans work by moving air across your skin, which helps to evaporate perspiration and make you feel cooler. This evaporative cooling effect can make you more comfortable in warm environments. However, it's important to note that fans do not actually change the temperature of the air in the room. They simply create the sensation of cooling by increasing air movement.