ASHRAE has released an updated edition of ANSI/ ASHRAE/IES Standard 90.2-2018, Energy-Efficient Design of Low Rise Residential Buildings. The standard establishes minimum whole-building energy performance requirements (design, construction, and verification) for energy-efficient residential buildings. The 2018 revision of Standard 90.2 outlines cost-effective residential building energy performance measures that are at least 50 percent more efficient than those defined by the 2006 International Energy Construction Code (IECC).