Air conditioning system for buildings and air-conditioned building, especially azero energy house

摘要

A method of air-conditioning a building with low heat loss, having the following steps: providing a fresh-air/outgoing-air system for feeding fresh air through a heat accumulator being located beneath said building and extracting said outgoing air through the heat accumulator; routing the fresh-air and the outgoing air in first and second tubes, where the first tubes are nested in the second tubes so as to recover heat energy present in the outgoing air.