Bosch Thermostat V2 Not A Climate Entity In Home Assistant

Are you facing a frustrating issue where your Bosch Radiator Thermostat V2 isn't showing up as a climate entity in your Home Assistant setup? Many users have encountered this, and it can be a real headache when you can't control your heating directly from your smart home dashboard. Let's dive into this problem, explore potential causes, and discuss some solutions to get your thermostat working correctly. This comprehensive guide will help you troubleshoot and understand why your Bosch Thermostat V2 might only be appearing as sensors, and how to potentially fix this. The goal is to provide a detailed, easy-to-follow resource for anyone struggling with this specific integration. I'll provide you with detailed information to get your device working.

Understanding the Problem: Bosch Thermostat V2 and Home Assistant Integration

The core of the problem lies in the way Home Assistant integrates with the Bosch Smart Home Controller (SHC). When everything works correctly, your Bosch Radiator Thermostat V2 should appear as a climate.entity, allowing you to set target temperatures, change heating modes (like heat, cool, or auto), and view the current temperature. However, many users, including yourself, have reported that instead of a climate.entity, they only see sensor entities. These sensors typically include: sensor.radiator_battery, sensor.radiator_valve_position, and sensor.radiator_temperature. While these sensors provide useful information, they don't allow for direct control of the thermostat, making your smart home integration incomplete. The Bosch Smart Home integration is generally reliable, but it can have quirks, especially with specific hardware and firmware versions. Identifying the root cause requires a systematic approach, considering various factors such as Home Assistant version, Bosch SHC firmware, and the thermostat model.

The user's specific setup involves Home Assistant Core 2025.10.x running in Docker on a Linux system. They're using the Bosch SHC integration to connect to their Bosch Smart Home Controller. The problem is isolated to the Bosch Radiator Thermostat V2 (model BTH-RM2), which is not recognized as a climate entity. Several troubleshooting steps have already been attempted, including reloading the integration, restarting both the SHC and Home Assistant, and re-adding the thermostat in the Bosch app. Despite these efforts, the issue persists. This situation highlights a common challenge in smart home automation: ensuring seamless integration between different devices and platforms. The inability to control the thermostat through Home Assistant limits the user's ability to automate and optimize their home's heating system.

Potential Causes and Troubleshooting Steps

Several factors can contribute to your Bosch Radiator Thermostat V2 not appearing as a climate entity. Let's break down some potential causes and the troubleshooting steps you can take:

1. Integration and Compatibility Issues:

The Home Assistant integration with the Bosch SHC is generally well-maintained, but compatibility issues can arise, especially with newer Bosch SHC firmware versions. Make sure that your Home Assistant version and the Bosch SHC integration are up-to-date. Check the Home Assistant documentation and the Bosch SHC integration page for any known compatibility issues or limitations with your specific firmware versions. Outdated integrations or firmware can lead to unexpected behavior. It is important to check the compatibility matrix and the latest updates related to the Bosch SHC integration. Sometimes, updates to Home Assistant might require corresponding updates to the Bosch SHC integration or vice versa.

2. Bosch SHC Firmware:

Firmware versions on the Bosch Smart Home Controller can significantly impact the integration. Older or beta firmware versions might have bugs that prevent the correct discovery of climate entities. Check the Bosch Smart Home app to ensure your SHC firmware is up-to-date. If you are comfortable with it, you might consider temporarily downgrading your SHC firmware to a known stable version. However, be cautious and always back up your settings before making significant firmware changes. It's often worth checking the Bosch Smart Home community forums to see if other users with the same SHC firmware version are experiencing similar issues. This can provide valuable insights into whether the problem is specific to your setup or a more widespread issue. Some users have found that certain SHC firmware versions have limitations or bugs that affect how devices are exposed to third-party integrations.

3. Device Discovery and Entity Creation:

Home Assistant relies on the Bosch SHC to properly expose the thermostat as a climate entity. Sometimes, the initial device discovery process might fail to recognize the device correctly. Try the following:

• Restart the SHC: Power cycle your Bosch Smart Home Controller. This can sometimes resolve issues related to device discovery.
• Restart Home Assistant: Restarting Home Assistant ensures that the integration reloads and attempts to discover devices again.
• Check the Logs: Inspect the Home Assistant logs (Configuration -> Logs) for any errors or warnings related to the Bosch SHC integration or the thermostat. Look for clues about why the climate entity isn't being created. Search for terms like