The RES check product group makes it fast and easy for builders, designers, and contractors to determine whether new homes, additions, and alterations meet the requirements of the IECC or a number of state energy codes. Support for the 20 IECC, as well as future codes, will only be available in REScheck-Web as eventually the Desktop version will become unsupported. Note: REScheck Desktop only supports compliance through the 2015 IECC.

View a list of supported software versions for code compliance tools.

See if your state or county can use RES check to show compliance.

Download via the link at the bottom of the right sidebar.

RES check™ Desktop for Windows ® may be downloaded and installed directly to your desktop. RES check-Web™ is accessible directly from the website without having to download and install.

Help Desk inquiries submitted during this time will be answered the first week of January.

Limited Technical Assistance notice: User support for the Building Energy Codes Program will be unavailable from December 23 through January 2, 2023.

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