U.S. Department of Energy - Energy Efficiency and Renewable Energy
Skip Navigation to main content U.S. Department of Energy Energy Efficiency and Renewable Energy
Building Energy Codes Program
Site Map Need Help? -
Ask an Energy Codes Expert
(Software Tools and Energy Codes Assistance)

EERE Information Center
Printer Friendly Format
Building Energy Codes Program

Download COMcheck™ Software

The latest Windows version of COMcheck is Version 3.7.1 (released March 2010).

Download COMcheck, Version 3.7.1
on Windows 2000, XP, Vista, Windows 7 (20 MB) in either single, multiuser, or network environments

Supported Codes:
IECC: 1998, 2000, 2001, 2003, 2004, 2006 and 2009.
ASHRAE/IES Standard 90.1: 1998, 1999, 2001, 2004 and 2007, and various state-developed energy codes.

See What's New in COMcheck for major changes in each new release.

State-Specific Energy Codes

The generic COMcheck software includes the following state-specific energy codes: Georgia, New Hampshire, New York, Vermont and Pima County, Arizona. Standalone, state-specific versions of COMcheck are no longer provided.

New York Commercial Building Code Notice

COMcheck 3.7.1 supports the 2010 New York Energy Conservation Construction Code, which is required for permit applications applied for after December 2010.

For permit applications applied for prior to December 2010, please use COMcheck 3.7.0 (or earlier), which supports the 2007 New York Energy Conservation Construction Code.

For building designs based on ASHRAE Standard 90.1, the '90.1 (2007) Standard' code may be used to demonstrate compliance.

Please be sure to select the appropriate COMcheck version and energy code to fit your needs. Prior versions of COMcheck may be downloaded from the product archive.

Most states can use COMcheck for energy code compliance. View map for details.


A Mac version of COMcheck is also available.

Download COMcheck, Version 3.7.0
runs on Mac OS X (11.8 MB)

Supported Codes:
IECC: 1998, 2000, 2001, 2003, 2004, 2006 and 2009.
ASHRAE/IES Standard 90.1: 1989, 1999, 2001, 2004 and 2007, and various state-developed energy codes.

Minimum system requirements: Apple Macintosh computer running Mac OS X 10.4.x or later (for 10.4.x Java 1.5.0 must be installed); at least 256 MB total RAM; at least 25 MB of disk space. space

See What's New in COMcheck MAC for major changes in each new release.

Linux Version

We recommend that Linux users use the webtools including COMcheck-Web. This version has been tested in Firefox and also works in Konqueror. We are interested in your feedback, please let us know if you have concerns.

View known problems in COMcheck.

Previous versions of COMcheck are available in the COMcheck Product Archive.

COMcheck Software User's Guide

The Software User's Guides are fully embedded in the online help messages, but are included here in printable form for those who prefer hard-copy documentation.

COMcheck Plan Review Quick Reference Guide

This Quick Reference Guide (PDF 94 KB) will take you, step-by-step, through a typical plan review of a COMcheck submittal.

Technical Support Documents

Technical Support Document for Version 3.6.1, of the COMcheck Software (PDF 1.41 MB)