by bigbigblue »
Fri Nov 23, 2007 5:16 pm
I too have been told to put radiators under the window - the reason is minimisation of draughts. Windows are cold and the air hitting them sinks, however the heat from a radiator under the window counteracts this.
Imagine a room with a window, and a rad on the opposite wall. The warm air from the rad rises, travels across the ceiling to the window, where it cools, and sinks to the floor and across the floor back to the rad position, causing air to circulate around the room and a horrible cold draught around your feet.
Placing rads on sidewalls causes similar (but less severe) problems. If you have to go with a side wall. I would put the rad as close to the window as possible to minimise the effect.