Residential Determinations

DOE Determinations in Progress

2003, 2006 and 2009 IECC – Under review at DOE: DOE is currently assessing whether the 2003 edition of the International Energy Conservation Code (IECC) would achieve greater efficiency compared to the 2000 IECC, and whether the 2006 IECC would achieve greater energy efficiency compared to the 2003 IECC.

Current DOE Determination

2000 IECC - Affirmative determination: Federal Register Notice - January 10, 2001. DOE issued a determination that the 2000 IECC would achieve greater energy efficiency in low-rise residential buildings than the 1998 IECC. View the news release announcing the determinations, or the complete determinations notice that appeared in the Federal Register on January 10, 2001 (PDF 151 KB).

State Certification

Each state was required to certify to DOE by January 10, 2003, that it has reviewed the provisions of its residential building code regarding energy efficiency and made a determination as to whether it is appropriate for the state to revise its residential building code to meet or exceed the 2000 IECC. States that inform the Department about their decision on updating to the 2000 IECC are excused from reporting their decision about adopting the 1998 IECC since DOE made a determination on both the 1998 and 2000 IECC on January 10, 2001. If a state determines that it is not appropriate to revise its residential code to meet or exceed the 2000 IECC, the state is required to explain why in writing to the Secretary of Energy.

View State Certification Maps

Residential Determinations History

1998 International Energy Conservation Code (IECC)
Affirmative determination on January 10, 2001 (PDF 151 KB)
1995 Model Energy Code (MEC)
Affirmative determination on December 6, 1996 (PDF 30 KB).
1993 Model Energy Code (MEC)
Affirmative determination on July 15,1994 (PDF 23 KB).

Code Comparison Documents

The following documents provide a framework in which states and local jurisdictions can identify each of these codes compare when considering updating their current code.

22-page publication describing the revisions to the 1995 MEC contained in the 1998 IECC. (PDF 97 KB).
23-page publication describing the revisions to the 1993 MEC contained in the 1995 MEC. (PDF 66 KB).
15-page publication describing the revisions to the 1992 MEC contained in the 1993 MEC. (PDF 49 KB).