Airex Oil Immersion Heater 2.25" B.S.P. 1000W

The Basics. Oil filled radiators work by using an electrical element to heat a reservoir of thermal oil inside the appliance. The electrical element is fully submerged within the oil, so that when it heats up, all of the warmth created is transferred to the surrounding liquid. 

1. The electricity will be channeled into the resistor in the heater. ...
2. The heat will then be absorbed by the oil inside the heater.
3. The oil will start to warm up and circulate through the columns and fins.
4. The heat will be transferred by the movement of the oil into the heater's metal fins.
5. The primary risk of oil heaters is that of fire and burns. In both regards they are generally more dangerous than heat pumps, hydronics and air conditioning, but less dangerous than electric fan heaters or bar radiators; this is due to the surface temperature of each type of heater.