Effective Date Project Certification Quality Assurance / Quality Control
Space Conditioning Source Energy Air Tightness Single Family Multifamly Non-Residential
2007 1-Jan PHIUS+ 2012 PHIUS Work-Sheet Case-by-case Case-by-case
2013 1-Jan v3.0.2
2015 1-Mar PHIUS+ 2012 / 2015
2015 15-Sep PHIUS+ 2015
2016 1-Jan v2.0
2017 1-Mar v2.1
1-Sep v4.0
2018 1-Mar PHIUS+ 2015 / 2018
1-Oct v4.1 v2.2
2019 1-Apr PHIUS+ 2018
2021 1-Mar PHIUS+ 2018 / Phius 2021 v4.1 / v4.2.1 v1.0
2022 1-Feb Phius 2021 v4.2.1 v2.3.3