Resource Library

This calculator is used to determine project-specific performance criteria for Phius 2024 New Construction projects using WUFI Passive. Projects submitted using METr have the criteria calculator built directly into the software.

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.

An archive of past versions of the Phius CORE Prescriptive Climate Zone Tables.

An archive of past versions of the Phius CORE Prescriptive climate map.

An archive of previous versions of the Phius CORE Prescriptive Snapshot.

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.

Use this estimator for indoor and outdoor pools. It is designed to account for heating energy use as well as pool-pump energy use.

This calculator should be used to determine lighting inputs in WUFI Passive or METr for non-residential projects and non-residential portions of Mixed-Use projects pursuing Phius Certification.