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.
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.

Mechanical Ventilation Strategies with Zehnder
Zehnder offers strategies for high-performance mechanical ventilation systems.

Phius Design Inspires Solar Decathlon Winning Projects
The Phius community continued its success in the 2023 Solar Decathlon competition.

Phius Calculators for Mechanical Systems and When to Use Them
Phius Project Certification Manager James Ortega and Phius Project Certifier Al Mitchell provide a road map for the calculators Phius offers for mechanical systems.

Facilitating the Renewable Transition Part III: Grid-Interactive Technologies and Demand Response
In Part III of our Facilitating the Renewable Transition blog series, Phius Associate Director Lisa White dives into the topics of grid-interactive technology and demand response.

Navigating the Phius Resource Library
A guide to finding and navigating through the wealth of information available in the Phius Resource Library
Bringing Phius to Your College or University
An informational pamphlet detailing Phius' offerings for Phius Certified Consultant training in universities and other educational institutions.

An Inside Look at the Phius Certified Windows Program Update Part I
Phius Product Certification Manager Michael Franco breaks down the forthcoming update to the Phius Window Certification Program (Part 1 of 2).

Mechanical Office Hours | April 2023
Phius Project Certifier Al Mitchell answers questions on mechanical systems.