Do you need to have a C wire for this model? null

Question

JordansMom · Accepted Answer

It depends on your current setup with your house and thermostat. If you go the the Google website, it shows a list of ACs that are compatible.

Nest Support · Answer

Typically, smart thermostats don’t require a common (C) wire, but every system is different. Without a common wire, your Nest thermostat will charge itself through power sharing using your existing heating and cooling wires.

When there’s a C wire, it becomes the thermostat’s go-to for power backup when power sharing doesn’t work. This can also conserve battery life since the batteries will likely only be in use when there’s a power loss to the thermostat.

Also, Nest Thermostat (2020) has a backup battery. For systems that are not using a C wire, the average battery life is three to six months. However, depending on the Wi-Fi activity on the thermostat, it may be possible to extend or reduce the battery life.

We recommend using our Compatibility Checker tool on this link to verify if your system is compatible: https://support.google.com/googlenest/answer/9246656

“Do you need to have a C wire for this model?”

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