It's still a maker/hobby space thing as far as I can tell. Using Home Assistant with a few relays and an Esp8266 gives you a powerful smart thermostat for a few

It's still a maker/hobby space thing as far as I can tell. Using Home Assistant with a few relays and an Esp8266 gives you a powerful smart thermostat for a few bucks but isn't the most trivial thing in the world to get going. https://partofthething.com/thoughts/enlighten-your-old-furnace-with-a-raspberry-pi-home-assistant-an-esp8266-and-some-relays/ https://partofthething.com/thoughts/enlighten-your-old-furna...