Passive House Standard Outperforms Traditional Codes in Energy Efficiency

The Passive House Network (PHN) has released new research showing that the Passive House standard is significantly more energy-efficient than standard energy codes in multifamily buildings across different climate zones. The findings, published in a study conducted by RDH Building Science Inc., highlight the robust alternative compliance pathway that Passive House presents for policymakers and building professionals.

According to the study, modeled scenarios demonstrate that Passive House buildings consistently achieve a Total Energy Use Intensity (TEUI) of 13 kBtu/ft²/yr, a figure that is markedly lower than the 29-57 kBtu/ft²/yr range of the standard energy codes evaluated, such as the International Energy Conservation Code (IECC) 2021, ASHRAE 2016, and ASHRAE 2019. This efficiency translates to up to 4.5 times greater energy performance, making Passive House an attractive solution for reducing energy consumption in buildings.

Bronwyn Barry, PHN's Policy Director, emphasized the significance of the research, stating, "Passive House produces incredibly efficient buildings in every climate in the continental U.S. At a time when much of our grid infrastructure is aging or in disrepair, policymakers need to take note of these results."

The study evaluated three Passive House standards, PHI Classic, PHI Low Energy Building, and Phius 2024 Core, against the standard codes. The consistent performance of Passive House in all climate zones suggests that it can be a reliable and effective alternative to traditional building codes, providing predictable and high-performance energy outcomes.

To gain a deeper understanding of the report's methodology, assumptions, and findings, the public is invited to attend a free online presentation hosted by PHN on September 9th at 2 PM ET. The presentation will be led by Marine Sanchez, a Principal and Specialist at RDH Building Science Inc., and will offer an in-depth analysis of the study's key points.

Future studies will expand on this research by comparing Passive House and other energy standards in single-family homes, commercial buildings, and multifamily buildings in California, focusing on specific components and guidance in Title 24, v2022. These additional studies aim to provide a comprehensive view of Passive House's potential in various building typologies.

The research underscores the potential of Passive House as a forward-thinking approach to building design, offering a solution that not only meets but often exceeds the energy efficiency requirements of standard codes. As the built environment continues to grapple with the challenges of energy conservation and climate change, the findings of this study could play a crucial role in shaping future policies and incentives that promote sustainable building practices.