The Dyson Hot + Cool fan heater provides the fastest whole room heating in winter and high velocity air to cool in summer. It uses Air Multiplier technology to amplify surrounding air for long-range heat projection and to produce powerful airflow for personal cooling. There are no blades _ just an uninterrupted stream of smooth air. In heater mode, two PTC ceramic plates heat the air as it's projected into the room. These plates never exceed 392-Degrees F, so they don't burn dust and there's no worrying burning smell. Some fan heaters claim to be cooling fans as well, but many have low airflow and air velocity‹so they're not. The Dyson Hot + Cool fan heater draws in up to 6 gallons of air per second, generating high airflow and air velocity, for improved personal cooling