Resource Library

This edition of the Phius Project Spotlight Series highlights The Faircliff apartment building in Washington, D.C.

A paper on whole-life carbon assessment co-authored by Alan Gibson, Owner of GO Logic; Katrin Klingenberg, Founder & Co-Executive Director of Phius; Chris Magwood, Manager of Carbon-Free Buildings at RMI; Jacob Racusin, Co-Founder & Director of Sustainability and Building Science at New Frameworks; Lisa White, Co-Executive Director of Phius; and Graham Wright, Chief Building Scientist at Phius.

An expanded version of the closing remarks Phius Founder & Co-Executive Director Katrin Klingenberg shared at PhiusCon 2026 in Phoenix.

The full list of honorees from the 2026 Phius Passive Projects Design Competition

The Phius Certification Guidebook is the one-stop-shop for all things related to the Phius project certification program.

Below is the Executive Summary from an upcoming position paper titled Beyond the Carbon Divide - Aligning Objectives: Combining Operational and Embodied Carbon through Whole-Life Carbon Assessment.

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

This estimator may be used to determine a lower temperature reduction factor than the default of 0.95 and the associated additional energy use for attached zones outside of the thermal and airtight envelope that are conditioned to a lower setpoint temperature than the certified portion of the building.

Longtime Phius staff member Mike Knezovich says farewell and expresses his gratitude to the Phius community.

An archive of past versions of the Phius CORE Prescriptive Climate Zone Tables.