Types of electric heating devices
Electric heaters, like other devices, can be divided into several types depending on their design, operating features, as well as the method of air exchange. The last mentioned feature divides the category of these devices into those that use convection and radiation heating.

Electric convectors
The most commonly used and popular electric heaters are convectors. These devices are based on the gravity of the air flow. In practice it looks like this:

the device takes in cool air from below,
then heats it using a special heat exchanger,
the heated air rises and exits through the openings to the outside, heating the room in which the convector is installed.
Electric radiant heaters
Radiant electric heaters radiate heat outward across their entire surface. These devices are more expensive than convector devices, but over long periods of use they are more economical and efficient.

Electric oil heaters
Oil heaters look like cast iron radiators with fins. Modern models can also consist of two flat plates. Regardless of their design, the operating principle is the same. A special diathermic oil circulates inside the radiator, which is heated by electricity. The fins or fins of the radiator then heat up and release the heat to the outside. If you are looking for an electric heater that is the most efficient, then an oil radiator will be the most economical solution. This type of heating device is also recommended for allergy sufferers, as it generates a minimal amount of dust.

Fan heaters
Inside this type of electric heater there is a special coil, which heats up during operation, reaching very high temperatures. The heated air is blown outside the radiator using a built-in fan through holes in the case. The big advantage of fan heaters is their compactness and mobility. The small and lightweight device can be easily moved between rooms and used where it is needed. Another advantage is the short time it takes to heat up the air in the room. But after turning off, the temperature quickly drops to the original temperature.