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Nest thermostat is offline


Follow these steps if your Nest thermostat has been previously connected to your Wi-Fi network but disconnects repeatedly, or if it's offline in the Nest app or on the thermostat display.

If your thermostat doesn't have power

If your thermostat has power

  • You'll be able to control your system with the thermostat, but not with the app.
  • Follow the troubleshooting steps in this article.
  • Try adjusting the temperature with your thermostat to stay comfortable while you troubleshoot.
  • Even if it’s offline, your thermostat will continue to follow your temperature schedule and maintain Safety Temperatures. You can also change any options or settings on your thermostat, but not with the app.

How to reconnect your Nest thermostat to Wi-Fi

  • You should have physical access to your thermostat to troubleshoot. 
  • If you are not at home, your thermostat will automatically try to reconnect to your Wi-Fi network at regular intervals.
  • If your thermostat disconnects and reconnects frequently, the most common reasons are router settings or Wi-Fi interference.

Use the interactive troubleshooting guide or follow the instructions in the article below.

Click here for the interactive troubleshooting guide


1. Make sure your home Wi-Fi is working 

Check that you can get online with another device in your home. If you’re using a cell phone, turn on Airplane mode and then turn on Wi-Fi to make sure you don’t use cellular data to test your connection.

If you can’t connect, try using another device to double-check. If you can’t connect with any device, contact your internet service provider to check the service status in your area.

2. Check the status of the Nest service 

Click here to check the status of the Nest service.

If the Nest service is down, you may see “The Nest service can’t be reached right now” in the Nest app.

Wait for the Nest service to resume to see if your thermostat comes back online.

3. Check that you have the latest app version 

Make sure that you have the latest version of the Home or Nest app. Visit the Google Play Store and tap Update if one is available.

4. Check for messages and help codes on your thermostat

Sometimes your thermostat will tell you what’s happening. Here are some messages and help codes you might find.

  • Install power wire: If you find this message, your thermostat is not getting enough consistent power to stay connected to Wi-Fi. To resolve this issue, you’ll need to connect the Nest Power Connector or a C wire.  
  • E298, E73, E74 or E196 help codes: If you find one of these codes, your thermostat is not getting power. For troubleshooting help, go to Troubleshoot Nest thermostat help codes.

5. Restart your Nest thermostat

Restarting your thermostat will refresh your connection.

Nest Thermostat 3/4ths view

Nest Thermostat

Bring up the Menu view and then Settings Settings and then Restart and then Restart and then Yes to confirm.

Nest thermostat e heating Nest thermostat heating with silver ring

Nest Thermostat E or Nest Learning Thermostat

 Press the thermostat ring to bring up the Quick View menu  Settings   Reset  Restart  Turn the ring until you can select Ok.

6. Check the Nest thermostat's battery levels 

If your thermostat’s battery level is low, it will disconnect from Wi-Fi. This is to conserve power so it can continue controlling your system. If your thermostat repeatedly loses battery charge, it may require a C wire or the Nest Power Connector.

Nest Thermostat 3/4ths view

Nest Thermostat

The Nest Thermostat will let you know when the battery level is getting low, but you can manually check it any time.

To check the battery level, bring up the Menu view and then Settings and then Battery Nest Thermostat battery full. The icon will change depending on charge level.

If the status says "Very low," replace the batteries with new ones. Then, check if your thermostat reconnects. It may take a few moments.

Note: If low battery is a recurring issue, or if you think there may be an issue with wiring, go to Troubleshoot power issues for your thermostat article for more help.

Nest thermostat e heating Nest thermostat heating with silver ring

Nest Thermostat E or Nest Learning Thermostat

To check the battery level, bring up the Quick View menu Settings   Technical Info  Power. Look for the number labeled Battery.

  • If it’s 3.8V or higher, your thermostat is not disconnected because of a low battery.
  • If it’s below 3.6V, there might be a power issue that’s causing your thermostat to disconnect. Go to Troubleshoot power issues for your thermostat for more help.

7. Restart your router 

Restarting your router will 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 modem/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 will restart. Wait a couple of minutes or until you see steady power and connection lights. You may also see a quickly flashing data light.

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

8. Check for interference 

Checking the Wi-Fi signal strength and ping speed of your Nest thermostat can help determine if interference is preventing your thermostat from connecting. Interference is typically intermittent, so your thermostat can disconnect and reconnect to Wi-Fi repeatedly if this is the root cause.

Check thermostat connection strength

Nest Thermostat

On your thermostat, go to Settings Nest settings icon and then Network. You’ll see the connection status (Connected or Disconnected) as well as the signal strength.

Nest Thermostat E or Nest Learning Thermostat

Note: Depending on your thermostat’s software version, the ping may not be visible. If so, you’ll be able to check the Nest weave connection instead for information about your thermostat’s connection.

Press the ring to bring up the Quick View menu  Settings    Technical Info  Network. Look for two numbers: ping speed and signal strength. If you don’t see the ping, you can check the Nest weave connection instead.

Note: If you see Client not connected in this menu, you should check for sources of interference below.

  • Ping: Ping shows how long it takes for messages from your thermostat to travel to Nest servers and back. Ping speed should be lower than 1500 ms. You can try to improve your connection by removing sources of Wi-Fi interference below.
    • Important: If the ping speed is 0, the Nest thermostat is connected to the network but not communicating with our servers, usually due to router firewalls or other network settings. Continue to step 10 below for more information about router settings.
  • Signal strength: Signal strength is a 100 point scale. Anything less than 50 indicates a weak connection.

Check the Nest weave connection

Bring up the Quick view menu on your thermostat and then Settings Nest settings icon and then Technical Info and then Nest Weave. Then, check the status.

If the status says “Connected - Remote control unavailable,” there may be an issue with the Nest service.

If the status says “Not connected,” there may be an issue with the router or network.

Check for sources for Wi-Fi interference

If your thermostat’s ping is above 1000 or its signal strength is below 50, try turning off any devices that operate on a 2.4 GHz frequency, then check ping and signal strength again. Here are some devices that might cause problems:

  • Cordless phones
  • Baby monitors
  • Microwaves
  • Bluetooth devices
  • Wireless video equipment

For more information and steps to take to troubleshoot wireless interference, go to Learn about wireless interference and how to troubleshoot it.

9. Reset your thermostat's Wi-Fi connection

Nest Thermostat

To reset your thermostat’s connection, you’ll need to remove your thermostat from your account in the Home app and then set it up again. Keep in mind you’ll be able to skip the installation process and much of the setup steps.

  1. In the Home app, tap your thermostat on the home screen.
  2. Select Settings Nest settings icon  Remove
  3. On your thermostat, go to Settings Account Disconnect.
  4. In the Home app, tap + at the top left of the home screen.
  5. Then select Set up a Nest product.
  6. Begin thermostat setup by scanning the QR code on the back of the thermostat display.
  7. When you reach the Get started screen, select Already installed.
  8. You can then skip most of the usual setup steps until you reach the Wi-Fi setup step. Here you can enter the new password and network name.

Nest Thermostat E or Nest Learning Thermostat

Note: Depending on your thermostat’s software version, you may have the option to reset your thermostat’s network. This will remove all the network information from your thermostat. If you don’t find the option to reset the network, continue to step 10.

1. Reset the network

  1. Bring up the Quick View menu.
  2. Go to Settings Nest settings icon and then Reset.
  3. Select Network and choose Reset.
    Note: If you don’t see this option, continue to step 10.
  4. Confirm that you’d like to Reset your network settings.

2. Reconnect your thermostat to Wi-Fi

  1. Bring up the Quick View menu.
  2. Go to Settings  Nest settings icon and then Network.
  3. Choose your Wi-Fi network name and enter your password if prompted.
  4. If your thermostat still has trouble connecting, go to step 10 below and check the settings on your Wi-Fi router or access point. You can also try disabling any range extenders you may have installed for your Wi-Fi network.

3. Reconnect your thermostat to the app

  1. Bring up the Quick View menu.
  2. Go to Settings  Nest settings icon and then Nest app on your thermostat.
  3. Follow the thermostat's instructions.

10. Parental controls or firewall security

  • Incompatible settings on your home Wi-Fi router or access point can cause your thermostat to disconnect from Wi-Fi.
  • Highly restrictive firewall security or parental controls can block communication with Nest servers.
  • Refer to your Wi-Fi router/access point documentation to see how you can exempt the Nest thermostat from these restrictions.
  • If you still can’t connect your thermostat after changing parental control or firewall settings, make sure you’re using settings that allow your thermostat to connect to your home Wi-Fi. Check Recommended Wi-Fi settings for more information.

11. Check the incompatible list 

A few older routers are incompatible with Nest products. Some incompatibility problems can be resolved by updating the router’s software or firmware. 

Wi-Fi routers that are incompatible with Nest products


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