This Cylinder Fan Heater 240V 2.4kW has been designed so that it is not hot to the touch and is perfect for small enclosed environments and packed with many safety features. Electric heaters come in various forms and predominantly are either oil filled or fan assisted and are a great way to produce instant heat when you need it most. Fan heaters work on the principle that an electrical current is passed through an element converting the energy in to heat, a fan to the rear of the heater element blows air over the heat source creating warm air.