Nest and Ecobee are built for a different voltage than baseboard, radiant, or wall heaters. What the mismatch actually is, and what to look for.
What a thermostat C-wire does, how to check if you have one, your homeowner-side options, and the exact point where it becomes an HVAC tech’s job.
What the Matter badge does and doesn’t guarantee, when you need a Thread border router, and a 3-point check so your devices work together.