Resource Library

Phius Co-Founder & Co-Executive Director Katrin Klingenberg examines the value proposition of building resilience within the context of recent sever storms in Chicagoland.

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.

This edition of the Phius Project Spotlight Series highlights the Edogawa Passive House in Tokyo, Japan.

Phius Certification Team members Haley Harlow and Rodrigo Barrios-Piedra answer questions on the METr energy modeling software tool.

With another Phius Trades Training class on the horizon, this blog examines the importance of building up a skilled trades workforce.

Phius Communications Manager Max Lapthorne discusses the start of ticket sales for PhiusCon 2026 and the organization's focus on the event.

Phius Certification Manager Al Mitchell covers how to understand common outputs from WUFI Passive and METr as well as useful optimization tips.

Phius Building Certification Associate Alyssa Fink discusses the first-ever Phius Foundations Live! event that took place May 29, 2026, in Tucson, Arizona.

Guest blogger Connor Malloy breaks down his experience as the first-ever instructor of a Phius Certified Builder training in a college or university.

Phius Certification Manager Al Mitchell recounts his experience as a presenter and attendee at the 2026 Humid Climate Conference in Austin, Texas.