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. 

Subscribe to our mailing list to receive emails about BREEZE product releases, new tutorials, modeling tips and upcoming events. Subscribers also receive exclusive offers and promotions!

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


Incident Analyst Technical Questions

Please Incident Analyst: Adding Soures and Receptors video tutorial that demonstrates the multiple ways to add sources and receptors to your accidental release modeling scenario. Watch more video tutorials for Incident Analyst on the Incident Analyst Video page.

The last tutorial in the Getting Started series, Incident Analyst: Analyzing and Visualizing Model Results, will guide you through the robust set of model output options available in BREEZE Incident Analyst, including the powerful results visualization that can be achieved using BREEZE 3D Analyst. Watch more video tutorials for Incident Analyst on the Incident Analyst Video page.

Please watch the Incident Analyst: Defining Meteorological Conditions and Levels of Concern video tutorial that will guide you through defining the meteorological conditions and levels of concern for your accidental release model run in BREEZE Incident Analyst. Watch more video tutorials for Incident Analyst on the Incident Analyst Video page.

Please watch the Incident Analyst: Selecting and Adding Chemicals video tutorial that will walk you through the seamless process of selecting or adding a chemical or chemical mixture. Watch more video tutorials for Incident Analyst on the Incident Analyst Video page.

The models within Incident Analyst do not account for discrete buildings, however, they do account for surface roughness, which factors in obstacles such as buildings.

The models within Incident Analyst assume flat terrain. Users do have the option though to specify the surface roughness as well as whether the ground condition is dry, wet, or covered by snow.

BREEZE Incident Analyst includes four dispersion models (INPUFF; AFTOX; DEGADIS; SLAB), four fire (thermal radiation) models (Confined Pool Fire; Unconfined Pool Fire; Jet Fire; BLEVE), and four explosion (overpressure) models (US TNT Equivalency; UK HSE TNT Equivalency; TNO Multi-Energy Model; Baker Strehlow Tang Multi-Energy Model). When you purchase BREEZE Incident Analyst, you will have access to all of these models.

No, the license you purchase will be a perpetual one and yours to keep. One year of maintenance and support is included with the purchase of BREEZE Incident Analyst and once this first year of maintenance and support expires, you will have the option to renew your software maintenance to continue to have access to the latest software versions and to the support team. Note that you will still be able to use your software if you opt not to renew the maintenance (because the license you purchase is perpetual), however, you will not have access to download the latest versions or access to the BREEZE Support Team. As such, we recommend that all users keep their maintenance up to date. Once this first year expires, the annual fee to renew your license of BREEZE Incident Analyst if you choose to do so would be $1250 USD.

Absolutely! Within the Chemical Database you can add a new chemical with custom properties. This video tutorial guides users on how to add a new chemical to the Chemical Database. 

In the Meteorology section, the wind direction is the direction from which the wind is coming.

We provide a 50% discount for software purchased by universities and academies that will be used solely for academic purposes (e.g., classroom purposes; university-funded research). In order to be eligible for this discount, we ask that you provide us with a signed letter on University letterhead stating the intended uses of the software. 

Incident Analyst will calculate the release for the mixture. Mixture values are computed based on an average of the values for the pure components and the percentage of each component in the mixture for the common properties.

We have many online resources where you can learn more about BREEZE Incident Analyst, including the Features and Product Tour webpages. The Getting Started tutorial on the Tutorials tab will also provide you with information on the features and capabilities included within Incident Analyst.

Request a Demo

Related Products & Services

  • Evaluate damage to structures and injury to persons caused by explosions in three dimensions

  • Analyze potential risks associated with LFG and LNG releases

  • Analyze and visualize model results plus meteorological and terrain data

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