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Well I am with Dan who know his physics.
Radiators do not radiate much heat, less than 15%, they are misnamed they are convectors. Which means they need the movement of air to work at max efficiency.
The best position ( for even room warmth) is under windows as warm air rises with the introduction of cooler air by the window, however small then moves over the ceiling and back under the radiator, which has to be a minimum of 100mm from the ground to keep the circulation going which is why your head is warmer that your feet.
The jerk who installed my system all on internal walls behind doors (yuk cold spots) now all under windows more even toasty.
The only way of altering said scenario is the introduction of a fan and funnily enough they are called fanned convectors.
Basics.
Radiators do not radiate much heat, less than 15%, they are misnamed they are convectors. Which means they need the movement of air to work at max efficiency.
The best position ( for even room warmth) is under windows as warm air rises with the introduction of cooler air by the window, however small then moves over the ceiling and back under the radiator, which has to be a minimum of 100mm from the ground to keep the circulation going which is why your head is warmer that your feet.
No it dosnt if you follow a few simple rules, physics again.It also prevents you having long curtains.
The jerk who installed my system all on internal walls behind doors (yuk cold spots) now all under windows more even toasty.
The only way of altering said scenario is the introduction of a fan and funnily enough they are called fanned convectors.
Basics.