Can anyone recommend a thermostat system that is self-hosted (no third-party cloud) and integrates into homeassistant nicely? Something tasmota based would be even better.
This is the final bit of home automation that’s been difficult to solve. I’ve got a heat pump system and there are very few smart thermostat systems that aren’t beholden to a public cloud service.
With the Centralite units I have, most of the config like temp floating point and setting what is exposed is done on the thermostat itself (the OEM manual covers how to set it up). zigbee2mqtt seems to have way more configuration options than ZHA in HA, both pick it to varying degrees.
I would suggest going the z2m route, as that would probably give you the most ecobee similar options: https://www.zigbee2mqtt.io/devices/3156105.html