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- What is Passive Building?
  Your passive building questions, answered
  
  Passive Building
  
  Passive Building Principles
  
  Passive Building FAQs
  
  A Better Way to Zero
  
  Passive Building Foundations Training
- Sectors
  Passive isn't just for houses
  
  Single-Family
  
  Multifamily
  
  Office Buildings
  
  Schools
  
  Other Non-Residential
- Projects
  Phius Certified Projects are the most energy efficient and comfortable buildings in the world
  Find a Project
  
  Project Certification
  
  Submit a Project
  
  Certification Review Queue
- Products
  Phius Certified Products are guaranteed to perform to passive standards
  View Products
  
  Product Certification Overview
  
  Window Certification
  
  Panel Certification
- Professionals
  Phius Certified Professionals are on the cutting edge of high-performance building
  Find a Professional
  
  Phius Certified Consultant (CPHC®)
  
  Phius Certified Builder (CPHB)
  
  Phius Certified Rater
  
  Phius Certified Verifier
  
  Phius Certified Trades Professional
  
  Phius Associate
  
  Maintain Credentials
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
July 30 – August 1

Phius Certified Builder Training and Certification Exam | Seattle, WA | July 2025
Be part of the launch class for the new CPHB training!
Upcoming Sessions
- July Member Office Hours - Project Questions
  July 15
- Phius Certified Builder Training and Certification Exam | July 2025
  July 21 – August 1
- WUFI Passive Advanced - Multifamily | July 2025
  July 24 – 25
- Intro to THERM | July 2025
  July 29 – August 6
- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
  
  Incentives
  
  Codes
  
  Qualified Allocation Plans
  
  Cost Data
- Tools and Support
  Providing the tools you need to create healthier buildings
  Resource Library
  
  Certification Support
  
  Calculators and Protocols
  
  Feasibility Study
  
  METr Design Tool
  
  WUFI Passive Design Tool
  
  Climate Data
  
  Quality Assurance
  
  Tech Corner

Find a Professional

Areas Serviced

Certifications

Samuel Shepherd

Samuel Shepherd

Massachusetts

Phius Certified Consultant (CPHC)

Email

David Bemiss

Haycon building inc

Massachusetts

Phius Certified Consultant (CPHC)

Email

John Mann

RDH Building Science Inc.

Massachusetts

Phius Certified Consultant (CPHC)

Email

Juanita Ellias

Rivercity Woodworking

Illinois Minnesota Wisconsin

Phius Certified Rater Phius Certified Verifier

Email

DiAnn Tufts

PCA

United States Connecticut Maine Massachusetts New Hampshire Rhode Island Vermont

Phius Certified Consultant (CPHC)

Email

Nathaniel Vice

Nathan Vice

Massachusetts

Phius Certified Consultant (CPHC)

Email

Shawn K Robinson

Shawn Robinson

Oregon

Phius Certified Consultant (CPHC)

Email

Greg Eckert

Johnson Braund Inc

Tennessee

Phius Certified Consultant (CPHC)

Email

Christina Aßmann

Ashley McGraw Architects

New York

Phius Certified Consultant (CPHC)

Email

Ali Yalaz

Simpson Gumpertz & Heger

United States

Phius Certified Rater Phius Certified Verifier

Email