- This SpeedComfort fan can be attached to radiators to heat up your room faster - perfect for cold winter nights- The two fans can be combined with an included connector cable and fixed any radiators between 75 to 120 cm- With its magment attachment it's super-easy to set up- Adjust the temperature with the external thermostat to find your comfort- It also helps save some energy by heating up the room at a lowered central heating water temperature