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- What is Passive Building?
  Your passive building questions, answered
  
  Passive Building
  
  Passive Building Principles
  
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  A Better Way to Zero
  
  Passive Building Foundations Training
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  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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  Certification Review Queue
- Products
  Phius Certified Products are guaranteed to perform to passive standards
  View Products
  
  Product Certification Overview
  
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- Professionals
  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.
Categories
October 19 – 30

Phius Certified Builder Training & Certification Exam | October 2026
Build your business by becoming a Phius Certified Builder
Upcoming Sessions
- Phius Certified Consultant Training & Certification Exam | October 2026
  October 19 – 30
- Phius Certified Builder Training & Certification Exam | October 2026
  October 19 – 30
- Phius Certified Builder Training & Certification Exam | Boston, MA | November 2026
  November 4 – 6
- Phius Certified Consultant Training & Certification Exam | November 2026
  November 9 – 20
- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
  
  Financial Incentives
  
  Codes
  
  Qualified Allocation Plans
  
  Cost Data
- Tools and Support
  Providing the tools you need to create healthier buildings
  Resource Library
  
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  Calculators and Protocols
  
  Feasibility Study
  
  METr Design Tool
  
  WUFI Passive Design Tool
  
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Passive Building
- What is Passive Building?
  Your passive building questions, answered
- Sectors
  Passive isn't just for houses
Certifications
- Projects
  Phius Certified Projects are the most energy efficient and comfortable buildings in the world
  Find a Project
- Products
  Phius Certified Products are guaranteed to perform to passive standards
  View Products
- Professionals
  Phius Certified Professionals are on the cutting edge of high-performance building
  Find a Professional
Standards
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.
Education
Categories
Upcoming Sessions
- Phius Certified Consultant Training & Certification Exam | October 2026
  October 19 – 30
- Phius Certified Builder Training & Certification Exam | October 2026
  October 19 – 30
- Phius Certified Builder Training & Certification Exam | Boston, MA | November 2026
  November 4 – 6
- Phius Certified Consultant Training & Certification Exam | November 2026
  November 9 – 20
October 19 – 30

Phius Certified Builder Training & Certification Exam | October 2026
Build your business by becoming a Phius Certified Builder
Resources
- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
- Tools and Support
  Providing the tools you need to create healthier buildings
  Resource Library
About Us
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Upcoming events

Feb 8 2027

Live Virtual Session Training

Intro to THERM | February 2027

Ryan Abendroth

M W 1-5PM ET / W 1-3PM ET 10 CEU

Jun 22 2027

Live Virtual Session Training

Intro to THERM | June 2027

Sayo Okada

T/W/W 6:00-9:00 PM Eastern 10 CEU

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