Passive House

What is a passive house & why is it so special?

A Passive House is a highly energy-efficient building standard that emphasizes minimal energy use while maintaining comfort. Developed in 1988 by Professor Bo Adamson and Dr. Wolfgang Feist, the concept is based on excellent insulation, airtight construction, and efficient heat recovery systems. These homes save up to 90% in energy compared to traditional houses, offering significant reductions in heating costs and ensuring thermal comfort year-round.

Key features of a Passive House

  • Passive heating and cooling: The house uses internal heat gains and excellent insulation to minimize the need for active heating systems.
  • Heat Recovery Ventilation: Fresh air is supplied to rooms with minimal energy loss, while stale air is exhausted.
  • Airtight Construction: The building is designed to prevent air leaks, improving energy efficiency and maintaining indoor air quality.

 

To meet Passive House standards, the building must:

  • Limit space heating energy to 15kWh/m² per year.
  • Ensure airtightness with less than 0.6 air changes per hour.
  • Be thermal bridge-free to maintain consistent indoor temperatures.

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