The first prefabricated house of nearly zero energy consumption ΝΖΕΒ (Nearly Zero Energy Building), which designed by Passive House philosophy, constructed by Easy Green in Porto Rafti at Attica region. This residence is one of the few passive house residences already built in Greece (no more of 10) and it is the first Passive House built with the prefabrication method. It has an air ventilation system with heat recovery up to 81% in combination with water-air exchanger which is heated by
solar panels. The combination of this systems in addition to high thermal comfort, to stable humidity and good ventilation will ensure nearly zero energy consumption. At the ventilation system a typical geothermal system will also be adapted for cool air in the summer and warm air in the winter. The needed hot water will covered entirely from 8m² solar panels in combination with a 500lt inertia tank. The construction will be completed in almost 40 days.