As in village houses they made warm floors. Installation of a warm floor in the house. A prerequisite for comfort in the house is warm. There are many ways to warm the room. But it is important that heat is distributed evenly in volume. And it is very unpleasant if the head is hot, and the legs are freezing. It is known from the laws of physics that warm air rises from the bottom up. For an effective heating of the floor, it is necessary that the heat source is either under the floor or be part of the floor structure. And such options exist. You just need to remember how warm floors were made in village houses.