New and improved with Jet Focus control, Dyson's AM09 fan heater is cleverly designed for even room heating and personal cooling. The Dyson Hot + Cools fan can be used all year round with Air Multipliers technology heating up the whole room quickly and evenly. While powerful airflow keeps you cool in summer, drawing in up to 6 gallons of air per second. Air Multipliers technology By using this specialised technology, Dyson fan heaters create a powerful stream of silent, uninterrupted airflow, so aside from a huge improvement in air quality, you will hardly notice it's there. Jet Focus control Exclusive to Dyson, Jet Focus control ensures long-range powerful airflow, or diffused mode for wide projection which mixes the surrounding air. Energy efficiency By using an intelligent thermostat to constantly monitor the temperature of your room and switching off once it's reached, the AM09 saves on energy. It switches back on again automatically when required - this way your room never overheats and energy is not wasted. Perfect for night time use The AM09 is 75% quieter than the AM05, with streamlined air channels for reduced airflow turbulence. It is the only fan heater with Quiet Mark accreditation. It also has a sleep timer, which be programmed to turn off after pre-set intervals ranging from 15 minutes to 9 hours.