Download CONTAM

Latest release

CONTAM 3.4.0.8

Released: January 8, 2026

ContamW: Windows: [CONTAM-3.4.0.8-Win32-setup.exe] (approximately 5.9 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
    ContamX updated to version 3.4.0.3
    SHA256 hash: 4CECAE317C6677DF96BB49A2ECEFDB8A9AA7537F0EC089321045FDDEB7ACD9D2

ContamX:
Windows 64-bit: [contam-x-3.4.0.3-win64.zip] (approximately 1 MB)
   Includes 64-bit versions of ContamX, simread, simcomp, and prjup
   SHA256 hash: 3F11B44513F1046D378226B3D63644493B78F0E8241DC70F83E319A458A14052

Linux 64-bit (Debian 12.12): [contam-x-3.4.0.3-Linux-64bit.tar.gz] (approximately 1 MB) 
   Includes 64-bit versions of ContamX, simread, simcomp, and prjup
   SHA256 hash: 3612798DFF9A4F1EA4F0279C4C7B526B244B88875DEA425FAFD868F3570DF4FA

Program fixes:

• ContamW Issue #122: Fixed issue in both ContamW and ContamX related to the maximum number of contaminants that are enabled to be defined in a single project. 

PREVIOUS VERSIONS

See CONTAM Revision History for more detailed information.

CONTAM 3.4.0.6

Released: December 12, 2024

ContamW: Windows: [CONTAM-3.4.0.6-Win32-setup.exe] (5.7 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
    ContamX remains version 3.4.0.2
    SHA256 hash: 09099AF3359DC33FCF4F5129239B81624D7B8B0AF9F71D6B27993D141BF49907

Program fixes:

• ContamW Issue #83: Fixed issue related to incorrect times on the x-axis of transient plots.
  Plots generated by users in certain time zones, e.g., Chile, started at hour 1 instead of 0.
  Plots now use daylight savings and standard time zone biases to correct the issue.

CONTAM 3.4.0.5

Released: April 5, 2024

ContamW: Windows: [CONTAM-3.4.0.5-Win32-setup.exe] (5.5 MB)
    
 Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
    ContamX remains version 3.4.0.2

Program fixes:

• ContamW Issue #65: Fixed issue related to incorrect junction/terminal levels written to PRJ when copying said icons on SketchPad.
  Issue identified in CONTAM Google Group on or around 1 April, 2024.
  May cause issues related to buoyancy-related pressure calculations of junctions/terminals.
  Potentially related to ContamW being used with Windows OS with Korean language.

CONTAM 3.4.0.4

Released: January 5, 2023

ContamW: Windows: [CONTAM-3.4.0.4-Win32-setup.exe] (5.5 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
    ContamX version 3.4.0.2 (no performance-related issues)

Program fixes:

• ContamW Issue #41: Fixed issue related to steady state results display.
  Issue identified by multiple user emails on or around 19 August, 2022.
• ContamW Issue #44: Modified popup dialog box display location to address multiple monitors.
• ContamW Issue #45: Fixed multiple problems related to working with Control Super Elements.
  • These issues did not exist in ContamW version 2.4c, but occurred due to code refactoring in 3.2 and beyond.
  • Could not read SE libraries created with previous versions of ContamW
  • Could not correctly copy SEs from PRJ to Library
• ContamW Issue #47: Export Data dialog option to Report Flows was not utilizing the time from the dialog box. Instead it reported the results for the time currently displayed on the SketchPad.
• ContamW Issue #48: Excessive memory usage when drawing on SketchPad.
  This issue was pointed out on the CONTAM Google Group on 13 December, 2021.
• ContamW Issue #49: Undefined duct segments were not detected by Building Check.
  This issue was pointed out on the CONTAM Google Group on 19 August, 2022.

CONTAM 3.4.0.3

Released: December 6, 2021

Program fixes:

• ContamW Issue #37: Defining duct junctions/terminals caused errors when saving the PRJ.
  This issue was pointed out on the CONTAM Google Group 6 December, 2021.

ContamW: Windows: [CONTAM-3.4.0.3-Win32-setup.exe] (5.5 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
    ContamX remains at version 3.4.0.1.

CONTAM 3.4.0.2

Released: November 8, 2021

Program fixes:

• ContamW Issue #27: Find & Replace for AHS by Name provided a list of Filters instead of AHS names in the dropdown.
• ContamW Issue #32: Enable results display of large SIM files.
• ContamW Issue #33: Prevent use of asterisk "*" at beginning of zone name.
• ContamW Issue #34: Program crash when scrolling SketchPad to view airflow paths with Pressure or Flow limits exceeded.

ContamW: Windows: [CONTAM-3.4.0.2-Win32-setup.exe] (5.5 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.

ContamX:
Windows 64-bit: [contam-x-3.4.0.1-win64.zip] (3.1 MB)
   Includes 64-bit versions of ContamX, simread, simcomp, prjup, and CONTAM_EPWtoWTH.exe
Linux 64-bit: [contam-x-3.4.0.1-Linux-64bit.tar.gz] (2.2 MB) 
   Includes 64-bit versions of ContamX, simread, simcomp, and prjup

CONTAM 3.4.0.1

Released: January 8, 2021
ContamW: Windows: [CONTAM-3.4.0.1-Win32-setup.exe] (5.5 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.
ContamX:
These packages include ContamX, simread, simcomp, and prjup.
Linux 64-bit: [contam-x-3.4.0.0-Linux-64bit.tar.gz] (1 MB) 
Linux 32-bit: [contam-x-3.4.0.0-Linux-32bit.tar.gz] (730 KB)
Windows 64-bit: [contam-x-3.4.0-win64.zip] (900 KB)

CONTAM 3.4.0.0

Released: July 2020
ContamW: Windows: [CONTAM-3.4.0.0-Win32-setup.exe] (5.5 MB)
    Installs 32-bit Windows versions of ContamW, ContamX, simread, simcomp, and prjup.

CONTAM 3.2.0.2

Windows: [ CONTAM32.msi ] (6.6 MB)
Windows 64-bit: [contam-x-32-release-x64.exe] (1.7 MB)
Linux (ContamX only): [contam-x-3.2.0.0-linux.tar.gz ] (1.5 MB)
CONTAM User Guide and Program Documentation version 3.2 [NIST.TN.1887.pdf] (3 MB)

CONTAM 3.1:

[CONTAM31.msi ] (5.2 MB)

CONTAM 3.0a: 

[CONTAM30.msi ] (4.4 MB)

CONTAM 2.4c: 

[CONTAM24.msi ] (4.25 MB)

Last updated: 1/8/2026