Can't connect Nest thermostat to the app

Check if you can get online with another device in your home. If you're using a phone, make sure you don’t use cellular data to test your connection. Turn on Airplane mode and then turn on Wi-Fi. Visit google.com to check if your connection is working.

If you can’t connect, use another device to verify. If no device connects, contact your internet service provider (ISP) to check the service status.

Make sure you have the latest version of the Nest app (for Nest Learning Thermostat 3rd gen or earlier or Nest Thermostat E) or the Home app (Nest Thermostat or Nest Learning Thermostat 4th gen) on your phone or tablet. You can download them from the Google Play Store.

Keep your Nest products and app up-to-date

Restart your thermostat to refresh your connection. Once done, try to add it to your account in the app again.

Nest Learning Thermostat (4th gen)

1. Press your thermostat display.
2. Use the dial to highlight Settings and press the thermostat toward the wall to select it.
3. Select Restart confirm that you want to restart your thermostat.
4. Press the thermostat display to bypass the QR code and reveal the fallback entry key.
5. Enter the alphanumeric key into the Google Home app.
6. Wait a few seconds for your thermostat to restart.

Nest Thermostat

1. To open the menu, tap the right side of the thermostat.

2. Scroll and tap to open Settings Restart.

3. Select Restart and choose Yes.

Nest Learning Thermostat (3rd gen or earlier) and Nest Thermostat E

Important: These models generate a text-only code natively inside their own menus and must be synced to the Nest app first. If the code doesn't generate, you must clear your old account connections and ensure a 2.4GHz Wi-Fi connection.

1. To bring up the Quick View menu, press the ring.

2. Turn the ring to Settings and press to select.

3. Choose Nest app Get Entry Key.
   • Your thermostat should show you a 7-character key to enter in the Nest app.
4. In the Nest app, tap Settings Add product Continue without scanning.
5. Select your thermostat model and type in your 7-character key.

Tip: To check automatic sync, close the Nest app and Google Home app completely. Reopen your Google Home app to confirm if your thermostat appears on the dashboard.

Restart your router and modem to reset your internet connection. You should also restart any Wi-Fi range extenders or repeaters.

1. Unplug your modem and router power cords. You may have a combination of a modem and router, or they may be separate devices. All the lights on your modem and router should be off.
2. Wait for 30 seconds, then plug your modem and router back in.
3. Your modem and router should restart. Wait a few minutes or until a steady power and connection lights appear. A quickly flashing data light may also appear.
4. Try to add your Nest thermostat to your account in the app again.

Tip: Every router is different. You may need to consult your router’s user manual for specific instructions on how to restart your router.

Restrictive firewall security or parental control settings on your Wi-Fi router can sometimes block communication with Nest servers.

Refer to your Wi-Fi router or access point documentation to learn how to exempt the Nest thermostat from these restrictions.

Also, make sure you use settings that allow your thermostat to connect to your account in the app.

Recommended Wi-Fi network and router settings for use with Nest products