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Commercial Compliance Using COMcheck

The COMcheck product group makes it easy for architects, builders, designers, and contractors to determine whether new commercial or high-rise residential buildings, additions, and alterations meet the requirements of the IECC and ASHRAE Standard 90.1, as well as several state-specific codes. COMcheck also simplifies compliance for building officials, plan checkers, and inspectors by allowing them to quickly determine if a building project meets the code.

COMcheck Desktop can be downloaded and installed directly to your desktop, while COMcheck-Web™ is accessible directly from the website without having to download and install.

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

COMcheck™ Software

COMcheck™ for Windows®
Version 3.9.4 (Build Version:
Runs on Windows 2000, XP, Vista, or Windows 7 in either single, multi-user, or network environments

Supported Codes:

2006, 2009, and 2012 IECC.
ASHRAE Standard 90.1:2004, 2007, and 2010
Various state-developed energy codes.

Version is a maintenance release that incorporates the 2014 Oregon energy code amendments, includes minor modifications to the processing of reports for the Vermont, Oregon, and North Carolina state energy codes, changes to the application of HVAC economizer requirements based on recent ICC code interpretation of the IECC 2009/2012 energy codes, corrects the2009 IECC U-factor requirement for zone 2 nonresidential above-grade steel framed walls, corrects a masonry wall redirection error, and contains numerous user interface usability modifications.

COMcheck™ for Mac®
Version 3.9.2 (Build Version:
Runs on Mac OS X

Supported Codes

2006, 2009, and 2012 IECC.
ASHRAE Standard 90.1: 2004, 2007, and 2010
various state-developed energy codes.

Minimum System Requirements

  • Mac OS X 10.5.x or later (for 10.5.x Java 1.5.0 must be installed)
  • at least 256 MB total RAM
  • at least 20 MB of disk space.

The COMcheck_OSX.dmg file will be created on your machine.



COMcheck-Web simplifies commercial and high-rise residential energy code compliance. It performs just like the desktop version of COMcheck, 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.

Comcheck Software Support Documents

User's Guide

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.