Passive House Design | Frenly Casa

Passive house design is a voluntary building performance standard that achieves very high energy efficiency and thermal comfort, substantially reducing a building's carbon footprint. This approach is used for both residential and non-residential buildings, such as offices, schools, and healthcare facilities, and is characterized by ultra-low energy requirements for space heating and cooling. As of 2025, there are over 47,400 certified passive house units worldwide, with a total treated floor area of approximately 4.32 million square meters. The passive house design movement has gained significant traction in recent years, with organizations such as the Passive House Institute (PHI) and the Passive House Institute US (PHIUS) promoting the standard and providing certification for compliant buildings. With its focus on energy efficiency and sustainability, passive house design is an important step towards reducing our reliance on fossil fuels and mitigating the impacts of climate change.