Keep a small area chilled with this Evapolar personal air cooler. It provides air conditioning, dehumidifying and filtering operations within a 30-45 sq. ft. area, with temperature reductions up to 30 degrees F. The LED controls of this Evapolar personal air cooler let you adjust airflow speed to your preferences. Note: This unit is not an air conditioner and does not have a compressor or condenser inside. Evaporative coolers are designed for spot cooling and will not lower a room's ambient temperature. This unit is best used in dry climates or open spaces. Keep a window or door open to limit the rise of humidity and for better ventilation. Add ice to the tank and set the unit near you for optimal results.