[stego-tech]

Ditto. Landlord shoved ecobees onto us after their developer program shuttered, and when internet connected they misbehave.

Curious to hear what local polling or local push thermostat you settled on with HA support!

[jacquesm]

Not the person you are asking. I'm partial to all Shelly stuff. So far very reliable and the price is ok. They do have a cloud but it is entirely optional.

[colordrops]

Ecobees (at least the model I have) can work without internet and integrate with Home Assistant.