"Passive House" ("Passivhaus" in German) - a voluntary building standard that is truly energy-efficient, creates comfortable living conditions, and at the same time is economical and causes a minimal negative impact on the environment.

The exact definition of the Passive House standard:

"Passive House is a building in which thermal comfort (ISO 7730) is achieved exclusively due to additional preheating (or cooling) of the mass of fresh air necessary to maintain high-quality air in the premises, without its additional re-circulation" ~ Professor Wolfgang Feist, PHI director, Germany.

This definition is purely functional; it contains no digital data and is suitable for any climate. This definition shows that the basis of the Passive House is not some specific standard, but a fundamental concept.

Passive Houses were not "invented". The principles of the Passive House were discovered. Regarding doubts as to whether the term "Passive House" is an accurate definition of this concept: there is currently no other term that more accurately corresponds to the concept of Passive House...(read more)