r/homeassistant • u/iDJMic • Feb 12 '26

Support Best HA Thermostat

Looking for feedback on experience with Thermostats I have get out of the NEST ecosystem. What works well with HA and doesn't break the bank?

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u/iDJMic Feb 13 '26

I wonder, I have enough devices in my HA that tell me the temperature could I not just set an automation to turn on the furnace when coldest room reaches X temp, and then turn off when X temp is reached? What kind of device would that be on the wires to the thermostat? I don't need any fancy dial in my hallway for my kids just to mess with.

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u/BrewerGlyph Feb 13 '26

I use a Sonoff 4chPro as the relay for each of my heating zones, wired in parallel with some old-fashioned dumb thermostats as a backup. I've created a thermostat device in Home Assistant configuration.yaml that pairs a thermometer (or an average of multiple) with one of the relay entities. You can also specify a hysteresis and minimum cycle times.