The Dyson Hot is a fan heater, which like Dyson fans, uses Air Multiplier technology that draws air in through an impeller. The air is then accelerated through a 2.5mm aperture set within the loop amplifier. This creates a jet of hot air which passes over an airfoil-shaped ramp channelling its direction. Dyson Hot fan heater can be set between 1 and 37°C and is equipped with an intelligent thermostat that starts monitoring the room temperature when the heater reaches the desired temperature.