> 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/2d-building/building/hvac/plant-hvac/four-pipe-heat-pump.md).

# Four Pipe Heat Pump

The Four Pipe Heat Pump is an air-source, reverse-cycle device that produces hot or chilled water. It centralises the configuration of heat pump-cooling and heat pump-heating, visible on the respective chilled water and hot water loops for efficient temperature control.

There are no options to configure this component. It serves as a central connection point for the two sides of the heat pump – the cooling plant and the heating plant, which are defined on the chilled water loop and hot water loop.

<figure><img src="https://2129322768-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfKJnzF2TwHA3APPbiCpF%2Fuploads%2FhF5PPHNc5RkcrYxdfkzD%2Fimage.png?alt=media&amp;token=b50eb046-3255-4e2e-bb79-e1d997fc12d1" alt=""><figcaption></figcaption></figure>

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