These heaters have several components they differ from standard heaters. This is the water film inside a panel heater. Convection is the method of heating this film while it warms. It draws a great deal of electrical energy when producing current. A heater that is filled with oil is heated by convection, which heats the oil, and then heating the area with the oil. It can be used to heat every room in the house if it is turned on. The heater will only draw enough current it requires to heat the area. How much electricity does it really use? It consumes six KW every minute if the unit is running all day long. Oil is more affordable than oil and is able to heat homes more efficiently. But electric heating is the way of the future. Electricity is an energy source that will soon replace oil as the preferred heating fuel. It is cheaper to heat homes with oil than is to use electricity to provide them with heat. However, electric heaters are greener than oil heaters. 1cksijfn6v.