The U.S. Department of Energy's Building Energy Codes Program is an information resource on national model energy codes. We work with other government agencies, state and local jurisdictions, national code organizations, and industry to promote stronger building energy codes and help states adopt, implement, and enforce those codes.
The Program recognizes that energy codes maximize energy efficiency only when they are fully embraced by users and supported through education, implementation, and enforcement.
Free Software and Technical Support
REScheck
The REScheck materials have been developed to simplify and clarify residential code compliance with the Model Energy Code (MEC), the International Energy Conservation Code (IECC), and state-specific codes.
FREE Downloads: REScheck, REScheck-Web, REScheck Package Generator
COMcheck
The COMcheck materials have been developed to simplify and clarify commerical code compliance withe the International Energy Conservation Code (IECC), ANSI/ASHRAE/IESNA Standard 90.1, and state-specific codes.
FREE Downloads: COMcheck, COMcheck-Web, COMcheck Package Generator
Ask an Energy Codes Expert
Need help with the software tools? Need energy codes assistance? Through the Ask an Expert program, energy codes experts are available to answer your specific questions.
Resource Center
The Resource Center is a web-based system designed to provide users with information about energy codes and beyond code technologies. Resources are available in a variety of different media types, including articles, graphics, online tools, presentations, and videos.