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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
  
  Single-Family
  
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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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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.
Categories
September 15 – 17

Phius Certified Builder Training & Certification Exam | Bellingham, WA | September 2026
Level up your career by becoming a Phius Certified Builder
Upcoming Sessions
- Phius Certified Consultant Training & Certification Exam | August 2026
  August 17 – 28
- Aug Office Hours - Project Questions
  August 18
- Phius Certified Builder Training & Certification Exam | September 2026
  September 14 – 25
- Sept Webinar: Phius Trades Training
  September 15
- Policy Work
  Promoting policies designed to grow passive building
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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

Phius at Elevation Webinar

Phius Certification Associate John Loercher discusses challenges and solutions for Phius Certification of buildings at elevations above 5,000 feet.

August 4, 2026

By John Loercher