About Us

Everything you need to know about Phius

Building for the Future

Phius is a non-profit 501(c)(3) organization committed to decarbonizing the built environment by making high-performance passive building the mainstream market standard. We train and certify professionals, maintain and update the Phius climate-specific passive building standard, certify and quality assure passive buildings, certify high-performance building products and conduct research to advance high-performance building.

All About Phius

Learn the Basics of Phius and Passive Building

The self-paced Passive Building Foundations Training offers an introduction to the basic principles of passive building and Phius. It is ideal for anyone without technical training who is interested in what passive building has to offer. Those who complete the course and pass the exam are recognized as Phius Associates.

It Just Makes Sense

Phius Associate Director Lisa White explains the global applications of Phius

Support Phius

Help keep Phius on the cutting-edge of passive building by supporting our research and programs with a donation.