Resource Library

Phius Communications Manager Max Lapthorne discusses messaging strategies for introducing passive building to newcomers.

Phius certification team members walk through the METr energy modeling software and answer questions.

This calculator is used to determine project-specific performance criteria for Phius 2024 New Construction projects using WUFI Passive. Projects submitted using METr now have the criteria calculator built into the software directly.

Phius Co-Founder & Co-Executive Director provides context for Phius' 2025 accomplishments and looks ahead to 2026.

This calculator can be used to determine psi-values for 2-D thermal bridges in combination with THERM.

Phius Senior Policy Analyst Isaac Elnecave provides a recap from the recent PH Mass Symposium and Phius Policy Specialist Zoe Rader offers a recap of other appearances and achievements of the Phius policy team in 2025.

Four Phius department heads reflect on accomplishments from 2025 and look ahead to 2026.

Phius Certification Program Director James Ortega and Building Certification Associate Margaret Goetsch answer project questions.

An outline of opportunities for giving to support the Phius mission during the giving season.

Phius Certification Program Director James Ortega answers project questions.