A room cooler is simply an electrical device which supplies cool air into your room. When the temperature outside becomes uncomfortable, you can cool your home by using a to keep the temperature down in your home. This cooling effect is achieved by circulating cool air through a fan and into your home. A room cooler does not make you lose power; it only helps to conserve energy and save money on your utility bills. You may have heard of air conditioners, but you may not be aware that room cooler units also exist!