Reflecting thermal energy
Of course, one of the significant advantages of aluminum is that it can reflect heat. It’s not only suitable for cooking, but it can also be used for whole-house hacks. In this case, we are going to associate a radiator with the aluminum foil.
Glue a piece of aluminum foil to the wall, just behind the radiator. What will happen is that the heat emitted by the radiator will last longer and, in turn, will be a little hotter. Very soon, your rooms will be warm and comfortable. You could lie in bed and drink hot chocolate while reading a good book.