Effective January 1, 2012:  2009 International Energy Code with Amendments

What is the International Energy Code (IECC)?

  • The IECC establishes a baseline for energy efficiency by setting performance standards for the building envelope (defined as the boundary that separates heated/cooled air from unconditioned, outside air), mechanical systems, lighting systems and service water heating systems in homes and commercial businesses.
  • The IECC does NOT regulate the efficiency of equipment, like computers or coffee pots or the efficiency of industrial processing, such as equipment for manufacturing.
  • The IECC does NOT regulate renewable energy systems such as solar thermal water heaters or solar photovoltaic panels.


The IECC focuses on the energy efficiency of building systems


All new home and commercial construction, remodels and additions will need to follow the IECC standards starting January 1, 2012. 


For more information:

2009 Energy Code

Mesa Energy Code, Title 4
International Codes Council

US Department of Energy

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Download REScheck

Green Mesa home

Contact Laura Hyneman
Special Projects Manager
 (480) 644-3844