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Document type: State-specific, Technical Assistance report
Publication Date: September 2009
Page Focus: Adoption

This nationwide analysis of commercial energy code compares ASHRAE Standard 90.1-2007 with the commercial code in each state as of June 2009. The results are provided in chapters specific to each state.

States with unique energy codes were not included in the analysis because the codes in these states would be difficult to appropriately compare to ASHRAE Standard 90.1 and most of these states have energy offices that routinely assess their codes against the model codes. In states with codes prior to and including the 2000 IECC or Standard 90.1-1999, those states with no statewide energy code, and home rule states which did not specifically request that another code be used, Standard 90.1-1999 was used as the baseline for comparison.

Three DOE Benchmark buildings were used for the simulation used in this analysis: a medium office building (53,600 ft2), a mid-rise apartment building (33,700 ft2), and a non-refrigerated warehouse (49,500 ft2...

Document type: State-specific
Publication Date: July 2013
Page Focus: Adoption

The State of Iowa has adopted the residential energy code requirements of the 2009 International Energy Conservation Code (IECC), effective as of 01/01/10 (Iowa Administrative Code 661 - Chaper 303.2 with reference to Iowa Code section 103A). Iowa has adopted the commercial energy code requrements of the 2009 IECC, effective as of 01/01/10 (Iowa Administrative Code 661 - Chaper 303.3 with reference to Iowa Code section 103A).  ASHRAE Standard 90.1 is adopted by reference for the commercial part of the code in Section 501.2 of the 2009 IECC.