Dear reader, imagine the speed of light, and that heat is transferred at such a speed. That’s how the sun heats up. The SBC and SBT gas infrared heaters manufactured by us also heat that way. Infrared radiation is the transmission of energy. Why is it economical? Imagine now a cloudy day in the winter and an air temperature of -5C, it is quite cold. When the sun comes out from the clouds outside the afternoon it will get a lot warmer. The air temperature will not rise quickly, it will still be -5C, while our feeling of heat, i.e. thermal comfort, will improve significantly. This is how gas radiators work, they allow for thermal comfort at a much lower air temperature, which means much less gas consumption, especially in tall buildings.