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.
Phius CORE Prescriptive Climate Zone Table Archive
An archive of past versions of the Phius CORE Prescriptive Climate Zone Tables.
Phius CORE Prescriptive Climate Map Archive
An archive of past versions of the Phius CORE Prescriptive climate map.
Phius CORE 2024 Prescriptive Snapshot
Phius CORE Prescriptive Snapshot Archive
An archive of previous versions of the Phius CORE Prescriptive Snapshot.
Phius CORE 2024 Prescriptive Climate Map
The climate map provides data related to the thermal enclosure and mechanical system performance levels required to achieve Phius CORE Prescriptive. It is similar to the same data as the Phius CORE Prescriptive snapshot, except it's displayed on a map. It is often helpful to use this map to find the location/climate data set closest to your project site.
Phius CORE 2024 Prescriptive - Climate Zone Table
Pool Energy Use Estimator v26.2.0
Use this estimator for indoor and outdoor pools. It is designed to account for heating energy use as well as pool-pump energy use.
Phius Guidance and Testing Rules for Trash and Compactor Rooms
This document provides configuration options for the modeling of trash and compactor rooms for projects pursuing Phius Certification.
September 2026 Project Spotlight: Conservatory Apartments
This edition of the Phius Project Spotlight Series highlights the Conservatory Apartments in Chicago, Illinois.