Building a passive house means concretely:

Reducing heat losses by better insulation

Reducing heat losses by extreme air tightness of the building

Guaranteeing the quality of air by a mechanic forced ventilation system with highly efficient heat exchanger

Using passive energy (geothermal energy, solar energy,…) Reducing energy demand by using more efficient equipment. These different points will lead to the following:

- an annual energy demand for heating < 15 kWh/m².a; - a final global energy demand for heating, domestic warm water, domestic equipment < 42 kWh/m².