2015 International Energy Conservation Code and ANSI/ASHRAE/IES Standard 90.1-2013

The original edition of this publication came about as a direct result of the American Recovery and Reinvestment Act of 2009 (ARRA), passed in February 2009. ARRA was designed to both stimulate economic recovery, by providing stimulus funding to various sectors of the economy and to accomplish policy goals on which there was broad consensus, such as increasing energy efficiency.

Both ICC and ASHRAE are proud of the processes they administer to produce the International Energy Conservation Code and ANSI/ASHRAE/IES Standard 90.1. They bring together experts, government officials from all levels, and industry representatives who manufacture, service and maintain the systems and products that go into energy-efficient buildings. These open and transparent processes produce documents that are respected and usable by all communities. These two documents, the IECC and ANSI/ASHRAE/IES 90.1, are recognized in the ARRA as the benchmarks for the energy efficiency of residential and commercial buildings, respectively. Because they address the same issues and because both may overlap in their coverage of building systems and designs, it makes sense to publish these two documents together for the benefit of building designers, engineers, and building code compliance personnel. In some cases, having both documents in one place will make it easier to choose between different design options. In all cases, this dual edition will make it easier to ensure that new and renovated buildings are built in compliance with the latest references vailable, in compliance with local requirements, and with the goal of ARRA to achieve 90% compliance with these target codes in all 50 states by 2017.