Heat radiates not only from floors, but from ceilings. Sunlight is collected through solar panels and heat is retained. If required, water warmed by the sun is circulated through pipes in the floors to supplement direct solar heat. In summer, heat gain is controlled by window shading and moderated air flow. Efficient electrical appliances and grey water heat exchangers provide less internal heat gain and less need for air conditioning.
Excess heat is radiated to the ground surrounding the house.
In addition, the waste water system provides evaporative cooling through a heat exchanger. Energy storage and conversion technology ensures that the solar energy is available in whatever form is needed year-round. When additional energy is needed, a co-generation unit supplies additional electricity and heat. The ventilation system is designed to ensure that the air entering the house is as clean as possible and is evenly distributed. Drinkable water and waste water management Rain and snow collected from the roof provides all of the water supply.