Since they only have to heat up 10% of the mass of a traditional panel radiator, the reaction time is much faster. The high tech finned tube element transfers the heat immediately into the room. Also this element stops much faster than any alternative. Each second that your radiator is emitting heat after you switch off the system, is a waste of energy. A traditional panel radiator or radiant floor heating continues emitting heat for a long time, due to it’s Low- mass and water content Low-H2O responds immediately. An independent test of the BRE* (*British Research Establishment) has proved this.