---
title: "Hot Spring"
description: "Hot Spring is a built-in integration for Home Assistant. It has 12 installs sharing analytics and works locally."
canonical: "https://vulpo.app/integrations/core/hotspring"
url: "https://vulpo.app/integrations/core/hotspring.md"
last-updated: "2026-10-22"
version: "1.4"
---

# Hot Spring

> Hot Spring is a built-in integration for Home Assistant. It has 12 installs sharing analytics and works locally.

Hot Spring is a built-in integration that connects Home Assistant to a Hot Spring spa through its Home Network Adapter. It communicates locally and is set up in the UI by entering the adapter's hostname or IP address. Home Assistant can also discover the adapter on the network and offer to add it. It adds binary sensors for heating and spa connection, a number for the target temperature, a select for the heating mode, and lights. Sensors report the current temperature, salt value, salt cartridge age, the salt 10-day check timer, and the versions of the control box, the FreshWater Salt System and the Wi-Fi dongle. Connection settings can be changed later without removing the integration, and a diagnostics file can be downloaded for bug reports.

Automatic summary of Home Assistant's source code. Something wrong? [Get in touch](https://vulpo.app/contact)

[Open in My Home Assistant](https://my.home-assistant.io/redirect/config_flow_start/?domain=hotspring)

## Supports

- **Works locally**: Talks to your devices on your own network. No vendor cloud in between.
- **Set up in the UI**: Add it in Settings, Devices and services. Nothing to download.
- **Found by itself**: Home Assistant spots it on the network and offers to add it.
- **Change settings later**: Its connection settings can change without removing it.
- **Platinum quality**: Home Assistant's own rating of its code and setup experience.
- **Updated with Home Assistant**: Ships and updates with every Home Assistant release.

## Setting it up

Home Assistant usually finds it on the network and offers to add it. It can also be added by hand under Settings, Devices and services.

### Connect

- **Host**: Hostname or IP address of your Hot Spring Home Network Adapter (HNA).

Texts from Home Assistant's source code, [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).

## Entities

- **Binary sensors**: Heating, Spa connected
- **Numbers**: Target temperature
- **Selects**: Heating mode
- **Sensors**: Control box version, Current temperature, FreshWater Salt System version, Salt 10-day check timer, Salt cartridge age, Salt value, Wi-Fi dongle version

## Troubleshooting

- **Diagnostics**: Downloads a diagnostics file to attach to a bug report.

## At a glance

- Kind: Built-in integration
- Category: [Lighting](https://vulpo.app/integrations/category/lighting.md)
- Number: 12 installs sharing analytics
- Connection: Works locally
- Upkeep: Part of Home Assistant
- Needs: Built into Home Assistant
- Quality scale: Platinum quality scale
- Domain: `hotspring`
- Source: <https://www.home-assistant.io/integrations/hotspring/>

In Vulpo: Light card, Select card, Chart card, Apple Watch, Control Center

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about)

Last updated 2026-10-22. Source: https://vulpo.app/integrations/core/hotspring

---

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