If I look at the HA log, the thermostat seems to disconnect and reconnect itself every few minutes. Does yours do that? After looking closer at it, I think this is an issue with the Rheem thermostat not staying connected to the home WiFi network.

Also, have you considered wiring in to the thermostat directly to avoid having to use a Rheem account?

Darn, will the trunk grow any taller or is that it?

I remember reading that GOS eventually wants to develop their own hardware, although I’m sure that is many years away.

This does seem crazy. I thought maybe they transfer over all the person’s data, but no it says in their FAQ that you lose all your data in the process.

I’ve had a lot of luck with banking apps on GrapheneOS. Worth a try if you haven’t already.

Unfortunately my furnace (Rheem) only works this way which is so disappointing. I wish it could be cracked so that it could work independently with home assistant.