Resource Library

This edition of the Phius Project Spotlight Series highlights the J.J. Carroll House senior living facility in Boston, Massachusetts.

Phius Certification Manager Al Mitchell dives into the new and improved CERV calculator to aid in Phius Certification.

This edition of the Phius Project Spotlight Series highlights Evanston's First Passive House, a single-family project in Evanston, Illinois.

Phius Building Certification Associate Zoe Rader fields project questions.

Repurposed from a white paper produced by members of the Bright Power team, this blog examines the updates made for the 2024 Phius standard.

This is a "performance criteria" protocol for assessing moisture risk in opaque assemblies. It is referred to as a compliance path in the Certification Guidebook, section B-1. The current version mainly pertains to WUFI Pro.

This edition of the Phius Project Spotlight Series highlights the Yannell Passive House retrofit project in Chicago.

A checklist of tasks for Phius quality assurance professionals to use in the field. This checklist must be used for Phius 2024 projects and all projects with a contract date after September 1, 2025.

Use this estimator to determine if a building targeting Phius Certification is required to provide a dedicated make-up air system when using intermittent direct exhaust systems such as exhaust dryers or exhaust kitchen range hoods.

Use this estimator to determine a climate-adjusted coefficient of performance (COP) for the Aegis A CO2 Heat Pump Water Heater. This estimator also includes instructions on modeling storage losses associated with water storage tanks per Lync by WATTS' available products. This estimator is applicable for the 250, 350 and 500 models.