Phius Standards

The Phius climate-specific passive building standards guide builders to success in the design and construction of passive building worldwide. They provides a quality-and-conservation-first framework for net zero building. They're internationally applicable and grounded in building science, best practices, the quality assurance necessary to deliver optimal results.

Phius CORE

Phius CORE is Phius' legacy certification. It is focused on optimizing investment in passive and active conservation strategies to achieve superior performance and quality construction. CORE targets performance that is challenging but achievable with conservation measures only and has both a performance path for all buildings and a limited-scope prescriptive path for single-family/townhomes.

Buildings Built to the Phius Standard Are:

Safe

Safe

Phius-certified buildings go through a rigorous quality control process, ensuring safety for the environment and the building inhabitants.

Healthy

Healthy

Superb indoor air quality is a prerequisite for Phius certification – you can count on a healthy environment.

Comfortable

Comfortable

Superinsulation, high performance windows and efficient mechanical systems create a comfortable, quiet building.

Resilient

Resilient

Phius buildings have been proven to be more resilient in the event of natural disasters, such as wildfires and extreme heat and cold events.

Durable

Durable

The holistic design of Phius buildings and attention to detail in the enclosure make them uniquely built for the long haul.

Affordable

Affordable

Phius projects require minimal to no additional upfront costs, while guaranteeing substantial energy cost savings in the future.

Next Steps

Interested in Certification?

Phius has the largest and fastest-growing passive building certification program in North America. It combines thorough design verification protocol with a stringent Quality Assurance/Quality Control (QA/QC) program to deliver better buildings.
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Support Phius

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