Missing 1 of 3 thermostats from Google Nest Integration

Configuration
1

I’m only posting this to see if others have had the same issue.

I setup the new Nest integration and it was working great for awhile. I have 3 Nest E thermostats in my house. However, in December 2020, one of the three thermostats stopped showing up as a device. I went through the setup process again from scratch and reset the thermostat to no avail.

My working theory is that Google has begun transitioning a small number of devices over to a new interface that is currently incompatible with the HA Nest integration. If I use the Google Home App, the one thermostat that refuses to connect has a more advanced integration that shows humidity, energy use, etc. whereas the other two do not. All three thermostats have the same firmware so it must be a slow rollout on the back end on a device-by-device basis (part of Google’s plan to depreciate the Google Nest App and run everything through Google Home). I’ve found some discussion about this online, and it appears to be a very slow rollout that started a few months ago.

Anyone else see this come up? or have a fix?

2

I’m having the very same issue, except I’m missing 2 out my 3 thermostats. Logs have a few:

[homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.

Not sure if related.

3

Someone on Reddit gave me this tip. Try going into the app and moving one of the t-stats to a different room then reload the integration.

You can then move the t-stat back to the original room.

4

I am seeing this same issue with one of my two thermostats. I think your idea of google changing something on the back end is accurate. I am seeing the same scenario where my thermostat that is refusing to show up in HA shows more information in the Google Home app. In addition my thermostat that does show up in HA shows Connected through Nest in the settings page for it in the Google Home app. My missing thermostat does not show anything like this.

I hope a solution is found for this situation.