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Residential Compliance Using REScheck™
The REScheck 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. REScheck also simplifies compliance determinations for building officials, plan checkers, and inspectors by allowing them to quickly determine if a low-rise residence meets the code.
REScheck is appropriate for insulation and window trade-off calculations in residential detached one- and two-family buildings and multi-family buildings three stories or less in height above grade, such as apartments, condominiums, and townhouses. REScheck works by performing a simple U-factor x Area (UA) calculation for each building assembly to determine the overall UA of a building. The UA that would result from a building conforming to the code requirements is compared against the UA for your building. If the total heat loss (represented as a UA) through the envelope of your building does not exceed the total heat loss from the same building conforming to the code, the software generates a report that declares your building is compliant with the code.
REScheck Desktop can be downloaded and installed directly to your desktop, while REScheck-Web™ is accessible directly from the website without having to download and install.
REScheck™ for Windows®
Version 4.6.1 (Build Version: 188.8.131.52)
Runs on Windows 2000, XP, Vista, or Windows 7 in either single, multi-user, or network environments
2009, 2012 and 2015 IECC; and various state and county energy codes.
REScheck version 4.6.1 (build version 184.108.40.206) includes support for 2015 IECC. Several minor modifications were made to the state codes for North Carolina (crawl walls calculation, removed enforcement of U-factor average for performance alternative) and Washington (enforcement for 15% window/wall ratio for additions). The Java runtime engine has been updated and a new graphical user interface "look and feel" was implemented. Support for energy codes 2006/2007 IECC and 2006 IRC has been removed.
REScheck™ for Mac®
The Mac version of REScheck has been discontinued. Users are advised to use REScheck-Web 
REScheck-Web simplifies residential energy code compliance by automating tradeoff calculations for the IECC and a number of state-specific codes. It performs just like the REScheck desktop version, but you don't need to download or install any software on your computer.
Have a compliance question or need assistance with the software?
BECP's team of building energy codes experts is available to answer specific questions submitted through our web-based help desk .
REScheck Software Support Documents
Updates to REScheck and COMcheck Building Energy Code Compliance Software
The U.S. Department of Energy (DOE) is directed to provide technical assistance to states to support the implementation of model residential and commercial building energy codes (42 USC 6833). As part of this assistance, the DOE Building Energy Codes Program provides ongoing support for REScheck and COMcheck compliance software, which are updated based on new editions of the model codes. DOE has published guidance  surrounding its support for the software, including technical assistance requests for modified versions.