The independent institute for maximum energy efficiency in buildings
Welcome to our website!
Energy-efficient buildings are essential for effective climate protection. They guarantee maximum living comfort, good air quality, and low energy bills. The building standards Passive House and EnerPHit retrofit present proven, cost-effective and reliable solutions for achieving outstanding energy efficiency in buildings.
For more than three decades, the Passive House Institute has been one of the leading independent research institutions in the field of highly energy-efficient construction and retrofits. In addition to our research activities, we offer comprehensive advice on efficiency measures and project support, train specialists, certify energy-efficient buildings and building components, and develop planning tools.
Together with the affiliates of the International Passive House Association, we globally advocate for Passive House principles in policy, media, and across the construction industry.
NEW / "Component Award 2026" booklet
The award focused on scalable and buildable solutions for high-performance window replacement in existing buildings — with particular attention given to installation quality, thermal bridge reduction, phased refurbishment strategies, and the reduction of on-site disruption. A sincere thank you goes to the participating companies Quantum (CA), 21 Degrees (UK), WICONA (DE), Eurofinestra (IT), and Parka Wrap (NZ).