South side of building for humans, north for items
In energy efficient house also it is important to reasonably deploy the room, as a rule that the south side of building, where the sun is shining the most, is divided to such rooms as living room and lounge. Thanks to that residents could stay long in natural daylight.
On the other hand, from the north side of building should be placed utility room such as pantries, closets, lockers. In this part of the house it is possible to keep lower temperature, which would let us to lower heating costs.