Subtle elegance and high efficiency: This Vortice ceiling fan is the perfect choice if you are looking to save heating costs during the colder season of the year. Particularly during those periods when the radiator is working full time a lot of thermal energy is lost simply because there is no air movement inside the room. TDA systems were designed as a solution for this problem. Connected to a separate controller unit, the rotation speed and operation of the fans are regulated automatically. Another benefit of the Nordik range is their simple installation that requires next to no efforts.