Press down the thermostat ring on the Google Nest to display the Quick View menu. Next, pick the “Settings” option and turn the dial to select “Networks.” Now, choose the Wi-Fi network you wish to link with the Google Nest thermostat. Enter the password and select Done. If the Nest thermostat does not connect to the Wi-Fi, you can try restarting it. Restarting the router can also resolve the problem.