A Bird's Eye View of the PHIUS+ Passive Building Standard

PHIUS+ Is Within Reach

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Passive building is taking off in the multifamily sector

A Synopsis of the PHIUS+ Standard

Calibrated to move buildings to Net Zero—affordably

PHIUS+ Certification Guidebook

A field guide for team members in the certification process

WUFI® Passive Design Tool

State of the art modeling software uses your local climate and weather data

PHIUS+ Certification Process Checklist

A handy step-by-step guide to getting your project certified.

Quality Assurance is The Backbone of PHIUS+

PHIUS+ is the only passive building certification system that requires third-party quality assurance/quality control.

Certification Support

PHIUS is here to support project teams during certification every step of the way. We've got your back.

A Feasibility Study Lays the Groundwork for Success

A snapshot of your design and how to get out of the ground