Why do people put radiators in front of windows?
Why do people put radiators in front of windows? Windows are traditionally the worst insulated surfaces in a building shell. In the twentieth century, to combat that cold feeling and keep the room comfortably warm, radiators were always placed under a window. The rising heat of the radiator forms a kind of hot air curtain that shields you from the cold air. How far below a window sill should a radiator be? Aim for a minimum of 100mm (4") between the top of the radiator and the bottom of the sill. More is fine. Less than that and the radiator...