With the Welan radiators, the perceived thermal comfort is achieved at temperatures lower by about 2-3°C, as compared to convection heating, which allows to save about 10% on heating costs. For instance, inside a room with an actual temperature of 18°C, the perceived temperature is about 20-21°C. We can compare this effect to standing out in the sun on a hot day. Once we move away and hide in the shade, we feel immediately cooler, despite the fact that the air temperature remains the same. By lowering the temperature, the amount of heat transported through the space is reduced due to a lower temperature difference inside and outside. This helps to minimise heat losses during air exchange.