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- What is Passive Building?
  Your passive building questions, answered
  
  Passive Building
  
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- Sectors
  Passive isn't just for houses
  
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- Projects
  Phius Certified Projects are the most energy efficient and comfortable buildings in the world
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  Phius Certified Products are guaranteed to perform to passive standards
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  Phius Certified Professionals are on the cutting edge of high-performance building
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Our Approach
- New Construction
  Phius CORE and Phius ZERO provide the path for constructing a Phius building from the ground up.
- Retrofit
  Upgrade existing buildings to Phius standards using Phius CORE REVIVE and Phius ZERO REVIVE.
- Commercial
  Phius standards aren't just for residential buildings. Phius CORE COMM and Phius ZERO COMM can be applied to any non-residential building.
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December 1 – January 16

Phius Certified Trades Professional - Enclosure Specialist Training | December 2025 & January 2026 | Portland, OR
Become a Phius Enclosure Specialist!
Upcoming Sessions
- Member Office Hours - Projects
  December 9
- Jan. Webinar: Walking Through METr
  January 13
- Phius Certified Builder Training and Certification Exam | January 2026
  January 20 – 30
- Phius Certified Consultant Training & Certification Exam | January 2026
  January 20 – 30
- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
  
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- Tools and Support
  Providing the tools you need to create healthier buildings
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  WUFI Passive Design Tool
  
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  Tech Corner

Webinar

1.0 CEU

Design Certification Do's and Don'ts Webinar

Phius Certification Manager Haley Harlow provides design tips for Phius projects.

July 8, 2025

By Haley Harlow