Saunum
saunum
The Saunum integration integrates your Saunum Leil sauna control unit with Home Assistant. Saunum is an Estonian company that creates advanced sauna heaters and control systems with smart features.
In Apple Home through HomeKit Bridge
What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.
| Entity | Shows up as | Note |
|---|---|---|
light | Light | |
climate | Thermostat | |
binary_sensor | Sensor (contact) | |
sensor | Sensor (temperature) |
What people report
The Saunum Leil control panel is supported over Modbus TCP, with fan control added in late 2025.
- Works1
| Device | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| Saunum Leil touch screen control panel | Works Local | Modbus TCP; settings locked while a sauna session is activeSaved copySupported devices: Saunum Leil touch screen control panel. Limitations: The integration communicates with the control unit using the Modbus TCP protocol. Ensure your network allows communication on port 502. When the sauna session is active, the sauna duration, fan duration, and sauna type cannot be changed. The integration does not provide the ability to reboot, which can instead be done via the Leil touch screen control panel. Excerpt saved from home-assistant.io on 2026-10-23. | Docs |
Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.
How it connects
Local polling
Talks to the device on your network, asking it for updates every so often.
Details
| Installs (analytics) | 19 |
|---|---|
| Quality scale | Platinum |
| Added in | Home Assistant 2025.12 |
| Set up in the UI | Yes |
| Maintainers | @mettolen |
Devices listed in its documentation
- Saunum Leil touch screen control panel
Limitations from the docs
- The integration communicates with the control unit using the Modbus TCP protocol. Ensure your network allows communication on port 502.
- When the sauna session is active, the sauna duration, fan duration, and sauna type cannot be changed.
- The integration does not provide the ability to reboot, which can instead be done via the Leil touch screen control panel.
In ReReHome
Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.
Bridges get their own settings page listing the accessories behind them.
