What is Passive House / PassivHaus?
Passive House, or Passivhaus as it is also referred to, is a standard for energy efficiency in a building, which reduces the building's ecological footprint. It results in ultra-low energy buildings that require little energy for space heating or cooling.
A Passive House is a building in which thermal comfort can be achieved solely by post-heating or post-cooling the fresh air flow required for good indoor air quality, without the need for additional recirculation of air.
Now the UK Passivhaus Trust prides themselves with over 1,000 Passivhaus / Passive House buildings in the UK with growing numbers.