When using a Home Assistant server, coupled with homebridge-homeassistant, this thermostat accessory doesn't work. To provide a compatibility layer, I created a proxy between your thermostat accessory and the API in Home Assistant.
Hello @jharmn, as I'm not a Home Assistant user, feel free to push your work as pull request as you did a few days ago. I will integrate it as soon as possible.
When using a Home Assistant server, coupled with homebridge-homeassistant, this thermostat accessory doesn't work. To provide a compatibility layer, I created a proxy between your thermostat accessory and the API in Home Assistant.
https://github.com/jharmn/homebridge-homeassistant-thermostat https://hub.docker.com/r/jharmn/docker-homebridge-homeassistant-thermostat/builds/
Feel free to close the issue and ignore, I just thought you might want to share the option for Home Assistant users.