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Resource Library

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Modeling Protocol

Guidelines for using SketchUp with WUFI® Passive V26.1.0

Consider this a guide for beginners and experienced modelers alike. Phius' certification team put together this outline of helpful modeling tips, tricks and general information on getting the geometry of a building from SketchUp into WUFI Passive.

July 27, 2026
Blog Post

2026 Phius Passive Projects Design Competition Searches for the Best

Phius Communications Manager Max Lapthorne announces the opening of the Phius Passive Projects Design Competition and provides details on the competition.

July 23, 2026
Webinar
Member Only

Mechanical Office Hours | July 2026

Phius Certification Program Director James Ortega answers mechanical questions.

July 21, 2026
1 CEU
Blog Post

New NYSERDA Program Offers $25 Million for Commercial Projects in New York

Phius Building Certification Manager & Policy Specialist Zoe Rader details how team members on Phius projects can take advantage of financial incentives offered by a new program in New York.

July 16, 2026
Webinar

Thermal Bridge Mitigation Webinar

Phius Certification Program Director James Ortega outlines strategies for mitigating thermal bridging on passive building projects.

July 14, 2026
1 CEU
Blog Post

A Midwestern Goodbye

Former Phius Certification Manager Al Mitchell shares parting thoughts on the passive building industry and reflections on his time at Phius.

July 9, 2026
Blog Post

The Hidden Opportunity in a Changing Climate

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

July 2, 2026
Calculator/Tool

Phius Temperature Reduction Factor & Auxiliary Space Heating Estimator

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.

July 1, 2026
Blog Post

June 2026 Project Spotlight: Edogawa Passive House

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

June 25, 2026
Webinar
Member Only

METr Office Hours | June 2026

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

June 23, 2026
1 CEU
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