Passive architecture has been with us since ancient times. This is clear from the ancient writings that have lasted to this day in which Socrates, for example, defined how to build a Megaon "...in houses facing south, the Sun penetrates through the porch in winter, while in summer the The solar arc described rises above our heads and above the roof, so that there is shadow..."; o Marco Vitruvio indicated "...if we want our house designs to be correct, we must begin by taking good note of the countries and climates in which they are going to be built...". With a Passivhaus certified construction, significant reductions in primary energy consumption are achieved (up to 75% in heating and cooling), which have a positive impact on the sustainability of the planet