Why heating devices are always placed under a window? If the windows are not properly insulated, the heat doesn’t just go out the window?
In: Other
You like the heater by the windows just because you have the most heat loss there.
If you increase the temperature then you need to add energy everywhere to raise the temperature.
If you are keeping the temperature constant the energy the heater is relating only needs to compensate for the energy that has escaped out.
If you have perfect isolation no heating is needed to keep the temperature. So heating abounding is all about replacing the heat the escape.
So if the goal is to have the same temperature everywhere in the building you like to put the heater where the energy escape else the will become colder there. If you heat it there you can keep the whole room at a quite constant temperature.
IF you are happy to have it colder in the location where the windows are you can put the heater somewhere else. Then you have a temperature gradient in the house. It will require less energy as the heat loss depends on the temperature difference between the inside and outside. If you then want to keep it warm enough at the windows you need to have it warmer in the center,
The result is if you like to have a constant temperature in the house put the heater where the heat loss is the largest.
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