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Engineering Laboratory /Building Energy & Environment Division

NIST Multizone Modeling

The home of CONTAM and other NIST-developed IAQ and Ventilation modeling tools and information.

NEWS:

Contam Concept

This website was developed by the Indoor Air Quality and Ventilation Group to foster the development and facilitate the application of multizone ventilation and indoor air modeling across building design, operation, maintenance, investigation, and research. On this website, you can download the multizone airflow and contaminant transport modeling software, CONTAM, along with other modeling tools, information on their applications, and associated case studies.

Software Updates

  • January 8, 2026 - Updated CONTAM to version 3.4.0.8
  • December 12, 2024 - Updated CONTAM to version 3.4.0.6
  • March 8, 2023
    • Added CONTAM parametric analysis utilities (ContamFactorial and EnergyPlus-CONTAM co-simulation utility)
    • Added link to NIST Quick Indoor CO2 Tool
  • November 22, 2021: Released ViPER version 1.0
  • October 15, 2021
    • Updated to CONTAM3DExport tool v3.4.0.1
    • Updated EPWtoWTH file converter v2.0
  • May 17, 2021 - Introduction to CONTAM Training videos released to NIST Video Gallery. See Tutorials page of CONTAM Software section
  • August 11, 2020 - CONTAM 3.4 and related software released

Contacts

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