> For the complete documentation index, see [llms.txt](https://docs.betterbuilding.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betterbuilding.io/user-guide/workflows/designer-mode/airflow-networks/airflow-network-setup.md).

# Airflow Network Setup

Since an Airflow Network model is based on a network approach, it is necessary to build the network for each model. The network nodes (including zones and air distribution system nodes) must have some pathways to be connected to each other, with a minimum number of openings of two.

<img src="https://content.gitbook.com/content/fKJnzF2TwHA3APPbiCpF/blobs/TegCBSarMICIKoVwJblb/file.excalidraw.svg" alt="" class="gitbook-drawing">

Once a standard model has been established for any workflow, Airflow Network Model Setting, Space Ventilation and Infiltration and Window Settings must be set to run a simulation.&#x20;

{% hint style="info" %}
Modelling an Airflow Network can be complex. Although Speckel provides a significant amount of error checking to help determine if the model inputs are correct, it is impossible to account for all possible errors caused by violating network rules.
{% endhint %}


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