- 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 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
May 2 – 8

WUFI Passive - Single Family | May 2024
Advance your energy modeling skills at our upcoming WUFI workshop
Upcoming Sessions
- Builders 101
  May 1
- WUFI Passive - Single Family | May 2024
  May 2 – 8
- Phius Certified Builder Exam | April 2024
  May 3 – June 2
- Humid Climate Conference Day 1
  May 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
  
  WUFI Passive Design Tool
  
  Climate Data
  
  Quality Assurance
  
  Tech Corner

WUFI® Pro Hygrothermal Training

Analyze Moisture in Assemblies

WUFI® Pro software is used to analyze moisture conditions in building enclosures by performing one-dimensional hygrothermal calculations.

This training is under development, more is coming soon.

Find Other Upcoming Training Courses

WUFI Passive - Single Family | May 2024

May. 02–May. 08, 2024 – Th F 12:00 - 4:00 PM | W 12:00 - 2:00 PM Eastern

Phius Certified Builder Training and Certification Exam | May 2024

May. 13–May. 23, 2024 – M T W Th | 7:00 - 10:00 PM Eastern

Phius Certified Consultant Training and Certification Exam | May 2024

May. 14–May. 24, 2024 – T W F | 1:00 - 5:00 PM Eastern

Phius Certified Consultant Training & Certification Exam | June 2024

Jun. 03–Jun. 14, 2024 – M T Th F | 12:00 - 3:00 PM Eastern