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- What is Passive Building?
  Your passive building questions, answered
  
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  Passive isn't just for houses
  
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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
December 5 – 11

Intro to THERM | December 2024
Master thermal bridging with our THERM workshop!
Upcoming Sessions
- Phius Certified Builder Training and Certification Exam | December 2024
  December 2 – 13
- Annual Alliance Member Meeting
  December 3
- Intro to THERM | December 2024
  December 5 – 11
- Phius Certified Consultant Training & Certification Exam | December 2024
  December 9 – 20
- 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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  Tech Corner

Calculator/Tool

Phius 2021 Performance Criteria Calculator

This calculator is used to determine project-specific performance criteria for Phius 2021 Certification. Only available for projects with Phius contract dates before September 1, 2025.

Phius 2021 Criteria Calculator

This calculator, released on March 1, 2021, is used to determine project-specific performance criteria for Phius 2021 Certification.

Open the Phius 2021 Criteria Calculator

Go to the PHIUS+ 2018 Criteria Calculator Instead

Find Out Which Version is Applicable to Your Project