Phius Certification Program Version Eligibility Dates
The Phius Certification project contract date determines the required program version. Generally, projects can voluntary choose to comply with a newer version than required by contract date.

Phius Single-Family Quality Assurance Workbook
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.

The First Phius Retrofit in Georgia
SawHorse construction owner Matt Hoots discusses the #1920sMakeoverATL project, which will be the first Phius certified retrofit project in Georgia. The project includes a number of multimedia features, including a virtual tour.

Multifamily Certification 101
Phius Project Certification Manager James Ortega guides viewers through the certification process for Phius multifamily projects.

Buildings of Excellence with Bright Power
Bright Power's Carmel Pratt gives an overview of the organization's projects that have been recognized by NYSERDA Buildings of Excellence.

NYSERDA Buildings of Excellence Lessons Learned
Sustainable Comfort Inc. Senior Project Manager Michelle Tinner shares seven valuable lessons she learned from modeling and brining New York State Energy Research & Development (NYSERDA) Buildings of Excellence projects through the process of Phius design certification.

Project Office Hours | February 2023
Phius Project Certification Manager James Ortega answers project questions.

Phius Multifamily Quality Assurance Workbook
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.
Phius Window Comfort & Condensation Risk Assessment
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.

The Devil is in the Detail: Phius to Release Project Detail Library
Phius Associate Director Lisa White lays out Phius' plan to release a library of project details.