eli5: Why are radiators in houses often situated under a window- surely this is the worst place and the easiest way to lose all the heat?

Question

eli5: Why are radiators in houses often situated under a window- surely this is the worst place and the easiest way to lose all the heat?

In: 2851

Answer 1

On the contrary, it is the best place because that’s where cold air might leak into the house… so as it leaks in, it gets heated up. If you place it in the core of the house, then the window areas will be cold, and the core of the house would be hot. With radiators under the windows, no cold air can reach the center of the house without a bit of warming over the radiators.