Does this thermostat need a c-wire
1
In most cases, Nest thermostats can charge their built-in battery using your system’s heating and cooling wires. But, when your heating and cooling wires are not able to deliver the needed power for your Nest thermostat, you may need to connect a common or C wire. You can learn more about the common wire and why a Nest thermostat may need one here: https://support.google.com/googlenest/answer/9251212
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