Resource Library

Phius staff members James Ortega, Al Mitchell and Isaac Elnecave break down the do's and don'ts of hygrothermal for Phius projects.

Phius Senior Scientist Graham Wright provides details on the release of ASHRAE Standard 227 - Passive Building Design for public comment.

In the fourth and final installment of the Passive House Murder Mystery blog series, Phius Co-Founder & Executive Director Katrin Klingenberg recounts the rise of Phius into mainstream building codes.

Technical write-up of the research and methodology used to create the PHIUS+ 2018 passive building standard.

Technical write-up of the research and methodology used to create the Phius 2021 passive building standard.

With Net Zero Buildings Week on the horizon, we take a look at the Phius ZERO standard and what makes Phius the best path to net zero.

This workbook combines the requirements of all of Phius' co-requisite programs and includes all of Phius' quality assurance requirements. It is to be completed by the Phius Certified Rater on the project and submitted fully filled out to Phius for final certification.

Phius Senior Scientist Graham Wright provides a glimpse inside the process of creating the new Phius REVIVE program for retrofits that is currently under development.

The multifamily workbook combines the requirements of all Phius' co-requisite program requirements for Phius Certification and includes all of Phius' quality assurance requirements. It is to be completed by the Phius Certified Verifier on a multifamily project and submitted fully filled out to Phius for final certification.

Below are links to download v2.2 and v2.3, read further to determine which applies to your project.

The window comfort and condensation risk criterion applies to all projects, regardless of size. Use the calculator below to determine the requirements to ensure comfort and minimize condensation risk for your project.