Fan heaters provide instant heat. They are ideal to use in small and medium sized rooms. Most De'Longhi fan heaters can also be used for cool air during the summer.They are compact, lightweight and easy to store. Some of our models have a timer and an oscillating base for broader heat distribution.The heater is controlled by setting the temperature level. Once the room reaches this, the heater stops producing heat but will turn back on when the room temperature drops.