Energy Impact Study of the 2003 IECC and the 2009 IECC Energy Codes for Nebraska

The focus of this report is annual residential energy consumption under three energy code conditions. The codes compared are:

• Nebraska’s current residential energy code, the 2003 International Energy Conservation Code (IECC), and
• The 2006 International Energy Conservation Code (IECC), and
• The 2009 International Energy Conservation Code (IECC), with Energy Star heating equipment. Both Energy Star air-source heat pumps and Energy Star forced air furnaces were investigated.