General Information

No, the software does not require an Internet connection to run.

BREEZE Software requires you to run the software as an administrator when you unlock the software after it is installed. Once the software is unlocked, it can run without administrative rights. 

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If you are using your Customer ID and email address to unlock the software, then the software requires Internet access to connect to the BREEZE license server. If you are using a software unlock code provided by the BREEZE Team to unlock the software, Internet access is not needed. Note: In order to get the software unlock code, please email the software registration number to

Hardware Requirements
ComponentBREEZE Software
Intel or AMD processor, 32-bit or 64-bit. 500-megahertz (MHz) or higherAll BREEZE Software
256 megabytes (MB) RAM, 512 MB RAM recommendedAll BREEZE Software
2 gigabyte (GB) available disk spaceAll BREEZE Software
1024 x 768 minimum display resolutionAll BREEZE Software
Mouse or other pointing deviceAll BREEZE Software
3D features require a video card that supports DirectX 9AERMOD, CALPUFF, 3D Analyst, Downwash Analyst, and ExDAM
Video card with 3D hardware acceleration required for 3D viewsAERMOD, CALPUFF, 3D Analyst, Downwash Analyst, and ExDAM


Software Requirements
ComponentBREEZE Software
32-bit or 64-bit versions of Windows 10, Windows 8, Windows 7, Windows Vista, Windows Server 2012 or Windows Server 2008All BREEZE Software (With the exception of ROADS and LFG Fire/Risk)
32-bit versions of Windows 10, Windows 8, Windows 7, Windows Server 2008ROADS, LFG Fire/Risk
32-bit version of Windows VistaLFG Fire/Risk
Microsoft .NET Framework 4.0 or laterAERMET, AERMOD, AERSCREEN, VASDIP, TankESP
Microsoft .NET Framework 2.0 or laterCALPUFF, 3D Analyst, MetView, Incident Analyst
Microsoft Visual C++ 2010 Redistributable Package (x86)ExDAM
OpenGL 1.1 or greater


Esri ArcGIS for Desktop (sold separately, free version available)

 Risk Analyst

Microsoft Internet Explorer Version 7.0 or 8.0 (ArcGIS requirement)

 Risk Analyst


Please click the “forget your password” link below the Sign In section on the My BREEZE Login webpage. Then where prompted, enter your email address and click Submit to reset your password. If you have also forgotten your email address, please contact the BREEZE Support Team at +1 972-661-8881 or and we can provide you with the email address associated with your account to proceed with resetting your password.

The default installation directory of BREEZE Software is C:\Program Files\BREEZE\XXXX for 32-bit operating systems, and C:\Program Files (x86)\ BREEZE\XXXXX for 64-bit operating systems.

In addition to the online resources listed below, contact BREEZE to set up a live demo for a more customized evaluation:

  • Watch product overview videos and tutorials in the Video section of our software product pages
  • Browse the Product Tour section of our software pages for specific product details
  • Find user guides and technical papers in the Library section of our software pages

To locate the version number of your BREEZE Software product, please follow these steps:

  1. Click the BREEZE Application button at the top left corner of your BREEZE product
  2. Click the About button
  3. The software version appears to the right of the BREEZE logo

BREEZE Product Version Screenshot

To locate the version number of your BREEZE ROADS and LFG Fire/Risk Software product, please follow these steps: 

  1. Click the Help drop down menu in the main menu 
  2. Click the About button 
  3. The software version appears to the right of the BREEZE logo

ROADS - About


AERMOD Technical Questions

You can seamlessly import a base map into BREEZE AERMOD and 3D Analyst by following the step-by-step instructions in the Modeling Tip: Importing a Map Image File into BREEZE AERMOD or 3D Analyst or watch the AERMOD: Importing a Base Map video that visually shows the process import base maps.

BREEZE AERMOD offers numerous time-saving tools to help with setting up a modeling run. Watch the AERMOD: How to Import Data Using Spreadsheets video that shows you how to import data to your modeling project with just a few clicks of your mouse as well as other time-saving features available in the Data Tab.

Users can easily combine the .amz project file with the .amr results file to view BRMS results in BREEZE AERMOD by Modeling Tip: How to Merge BREEZE Remote Modeling System's Results with the Local .AMZ File and View Results in BREEZE AERMOD for step-by-step instructions.

Because the model run time increases with the number of receptors added, finding the highest concentrations can be a tricky process. To provide assistance, a variable density grid can be setup in BREEZE AERMOD to ease the process of identifying the highest concentrations while also minimizing the model runtime. To setup a variable density grid, please refer to the Modeling Tip: How to Set Up Variable Density Receptor Grid in AERMOD for step-by-step instructions.

Please refer to the Modeling Tip: Using 3D Receptor Grid in AERMOD for step-by-step instructions.

To improve efficiency for batch runs or save time in the event of a power failure or user interruption, please refer to the Modeling Tip: Batch Scheduling and Restart Options in BREEZE AERMOD.

BREEZE AERMOD includes numerous time-saving tools to help with setting up a model run. One of these tools is the Hourly Emission File Editor. Please refer to the Modeling Tip: Using Hourly Emission File Editor in BREEZE AERMOD to learn how to use this tool to easily use refined hourly emission rate data in your AERMOD runs.

Disabling onsite and offsite receptors is easy to do in BREEZE AERMOD. Please refer to the step-by-step instructions in the Modeling Tip: Disabling Onsite and Offsite Receptors in BREEZE AERMOD

BREEZE AERMOD includes the BREEZE Ozone File Editor which allows users to create, view, and edit hourly ozone files for use in the Ozone-Limiting Method (OLM) and the Plume Volume Molar Ratio Method (PVMRM). Please refer to Modeling Tip: Using Ozone File Editor Tools in BREEZE AERMOD for step-by-step instructions.

The main differences between these two editions of BREEZE AERMOD come down to the post-processing capabilities. For details, please visit the BREEZE AERMOD Editions webpage.

You will be able to find more information about the features included within BREEZE AERMOD by viewing the Features webpage as well as the Product Tour. The BREEZE AERMOD Overview Tutorial on the Videos tab will also provide you with information on the features and capabilities included within the software program. 

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