> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/codesys-hvac/en/hvac-library/description.md).

# Description

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<figure><img src="/files/ffcec275d12cabb1ebf4f2c849d5e1ebe1413435" alt="" width="100"><figcaption></figcaption></figure>
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The HVAC library contains function blocks, system macros for creating heating and ventilation systems, as well as for room automation and other industrial plant technology. It provides added value primarily through convenient programming and hardware independence of controllers and EA groups.

Corresponding visualization elements for the function blocks are located in the HVACV Visu library.
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***

So you can get started right away, we offer the library as a download. A license can be purchased via the CODESYS Store. If you need further assistance, please do not hesitate to contact us.

<a href="/spaces/ltcbXgy6Y2teLoU01eGk/pages/d43541386374ee679cf86612947da256714b73cf" class="button primary" data-icon="up-right-from-square">Download</a> <a href="https://store.codesys.com/de/hvac-building-process-automation-sl.html" class="button secondary" data-icon="seal">Purchase license</a> <a href="https://www.powerio.com/de/kontakt" class="button secondary" data-icon="question">Get support</a>

{% hint style="info" %}
**Licensing:**

Without purchasing a license (only *download*) the library runs for **30 minutes as an unrestricted demo version**. For productive use, a Single License (SL) / single device license is required per controller.\
For instructions on installing licenses, please visit the page [Product Licensing](/hub/codesys-hvac/en/overview/licensing.md).
{% endhint %}

### Overview

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<figure><img src="/files/3b46051d7940899f7dfaac483b9e939e04ba9988" alt=""><figcaption></figcaption></figure>

<p align="center"><em>Function blocks for plant programming in the HVAC environment. With freely usable visualization elements.</em></p>
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<figure><img src="/files/b7413534e6b091628ed58fd442843fb6d7890916" alt="" width="563"><figcaption></figcaption></figure>

<p align="center"><em>Parameterize instead of programming: speed up your engineering process with ready-made function blocks — just like many satisfied customers already do today.</em></p>
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***

### Description

The HVAC library contains function blocks and plant macros for creating heating and ventilation systems as well as for room automation and other industrial plant engineering. The main added value is in comfortable programming and hardware independence from controllers and EA groups.

{% hint style="success" %}
**Are you missing a function block or a special feature in the HVAC Library?**\
\
Feel free to contact us about this. Together we will review your requirements and expand the library – so you can implement your applications even more efficiently.
{% endhint %}

***

### Details

| **Documentation version**      | <code class="expression">space.vars.HVAC\_Library\_latest</code>                                             |
| ------------------------------ | ------------------------------------------------------------------------------------------------------------ |
| **Placeholder**                | `HVAC`                                                                                                       |
| **Available in CODESYS Store** | *Yes*                                                                                                        |
| **Programming system**         | *CODESYS V3.5.17.2 or higher*                                                                                |
| **Runtime system**             | *CODESYS Control V4.2.0.0 or higher*                                                                         |
| **Licensing**                  | *Single license (single-device license)*                                                                     |
| **License**                    | [HVAC Building Automation Package SL](https://store.codesys.com/de/hvac-building-process-automation-sl.html) |

***


---

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