Selection

Several types of electrical heaters are available:

Type of heating	Operating principle	Suitable for
Convection heater	The warm air flow through the vents at the top of the heater warms the room relatively quickly, but the flow of air also moves dust in the room. Most of them are equipped with a thermostat that allows you to adjust the heat intensity and the duration of appliance operation, enabling it to maintain the set temperature in the room.	Models with an additional fan that helps circulate warm air in the room are also available. Suitable in the cases where the home doesn’t have a general heating system or it doesn’t provide the required indoor temperature.
Oil-filled heater	Their principle of operation is similar to that of centralised heating radiators: a liquid heat transfer fluid – oil – is filled into the radiator, which transfers heat to the metal body of the heater as it warms up.	It is slower to heat up the room, but takes longer to cool down after switching off, which is why it is suitable as a long-term heat source. The heat output depends on the size of the surface or the number of sections; therefore, an appliance with more sections or fins will heat the room faster. Oil radiators with a thermostat and additional fan are also available. It is suitable in the cases where the existing heating system is not able to provide the required room temperature.
Inertia radiator	An accumulating electrical heater that is equipped with a heat accumulator or storage medium – a ceramic plate or bricks of a special material with the heating element built into the storage medium. This type of heater costs more but takes longer to cool down. Equipped with a thermostat, sometimes with an occupancy sensor to lower the room temperature in the absence of inhabitants, and with an open window sensor to automatically switch off the unit during ventilation.	It should be taken into consideration that, if this type of heater is operated, the temperature in the room will take a longer period of time to change than with the use of other electrical heaters. The inertia heater is suitable for homes, where electric heating is the only heat source.

It should be noted that 100 W are required to heat 1 m2, so a 1 kW heater should be chosen to heat a 10 m2 room, a 2 kW heater to heat a 20 m2 room, and so on.
It is important that the heater is equipped with a thermostat that allows you to adjust the heating capacity, not just turn the heater on and off, and maintains the temperature set in the room.
If you need to keep the room warm for a long time, you should choose a convection heater, which will heat the room quicker and more evenly.
If you only want to heat the part of the room where people are staying, you can choose an infrared heater. Such a heater reaches its maximum heating capacity in just a few seconds, rapidly generating heat in its heat radiation area (by warming the objects nearby).