Phius Certification for Projects, Products, and Professionals

To drive passive, net zero building into the mainstream, Phius certifies: building projects, data for products and components that go into those buildings, and professionals who design and deliver those buildings.

Project Certification

Created to guide and verify the successful design and construction of passive buildings, Phius project certification combines stringent requirements with detailed review and quality assurance.

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Product Certification

The Phius product certification program was developed for manufacturers to showcase their products and to provide constituents access to consistent data when specifying and modeling products in their projects.

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Professional Certification

Training and professional development is critical to the market success of delivering passive, net zero building. Phius certification is achieved by completing a professional training course and passing the certification exam.

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Phius Certification by the Numbers


Square feet of certified projects


Windows with Phius Certified Data


Active Phius Certified Professionals

These programs continue to experience exponential growth