The two organizations worked together previously to develop the national standard for energy efficiency in commerical buildings. The original residential Standard 90.2 was first developed by ASHRAE alone in 1993.
Standard 90.2 provides minimum requirements for the energy-efficient design of residential buildings. Last year, ASHRAE's board of directors recommended to the Standard 90.2 committee that it consider a goal of writing the standard so that it is 30% more efficient than the 2004 version, including both a prescriptive and a performance path.
The standard would target home builders and code officials in an easy-to-understand format that is simple to use. The committee plans to have an advisory public review of the standard later this year to determine whether proposed changes are meeting the needs of the audience.