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-DegreeF, so they don't burn dust and there's no worrying burning smell. The temperature can be set to the degree, from 33-DegreeF to 99-DegreeF and the airflow velocity can be precisely adjusted – either at the base of the machine or from the remote control, which attaches to the machine magnetically. 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. The machine cuts out automatically if it's tipped over and there are no visible heating elements or blades. Because there's no need for a protective grille, the Dyson Hot + Cool fan heater is easy to clean. It also saves energy – costing 30-percent less to heat the whole room than conventional fan heaters and can lower energy bills by 20-percent if used with air conditioning. All Dyson machines are tested rigorously during development, so the Dyson Hot + Cool fan heater comes with a 2 year parts and labor warranty.