The principle of an oil-filled radiator is similar to that of a district heating radiator: it is filled with a liquid heat carrier – oil, which, when heated, transfers heat to the metal body of the heater.

An oil-filled radiator heats the room more slowly, but it requires more time to cool down after switching off and is therefore suitable as a long-lasting source of heat.

The heat output of an oil-filled radiator depends on the size of the surface or the number of sections: a room will be heated faster by a device with a bigger number of sections or fins.

Oil-filled radiators with a thermostat and an additional fan are also available.

An oil-filled radiator is well suitable for cases where the existing heating system is not able to ensure the required room temperature.