How to Reconnect Nest Smart Thermostat Back to Alexa

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If you’ve been having trouble controlling your Nest thermostat through your Amazon voice assistant, don’t worry, there’s a simple solution. In this article, we will guide you through the process of reconnecting your Nest smart thermostat back to Alexa. By following these steps, you’ll regain control and be able to use voice commands to manage your thermostat once again.

Step 1: Log Out and Log Back In to the Nest App

The first step is to log out of the Nest app on your device. Once you’ve logged out, log back in again. This time, you’ll be prompted to connect to your Google account. Enter your username and password, and you’ll be taken back to the screen where your devices are usually displayed.

If your Nest thermostat and other Nest products are not appearing on this screen, you’ll need to add them back in. This process is similar to when you initially set up your devices. Make sure to add both your Nest thermostat and Nest Protect if you have it.

Step 2: Reconnect with the Amazon Voice Assistant App

Even after reconnecting your devices to the Nest app, they may still be missing from your Amazon voice assistant app. To fix this, you’ll need to disable and then re-enable the skill for your Nest devices.

  1. Open the Amazon voice assistant app.
  2. Go to the skills section and find the skill for your Nest thermostat.
  3. Disable the skill.
  4. Re-enable the skill.
  5. Sign into your Google account, just like you did with the Nest app.
  6. Once you’re signed in, scan for new devices.

Sometimes, the app will automatically detect the devices. However, if it doesn’t, you can manually scan for new devices within the app. The Nest thermostat will appear under the thermostat category once it reappears.

Step 3: Regain Voice Control

Now that your Nest thermostat is reconnected to both the Nest app and the Amazon voice assistant app, you should be able to control it using voice commands again. The thermostat will appear as a device in the voice assistant app’s thermostat category.

With this reconnection, you can once again enjoy the convenience of controlling your thermostat using your voice. If you want to set up routines or automation for your Nest thermostat, you now have the ability to do so.


By following these simple steps, you can easily reconnect your Nest smart thermostat back to Alexa. Remember to log out and log back in to the Nest app, add your devices if necessary, disable and re-enable the skill in the Amazon voice assistant app, and scan for new devices. With these actions, you’ll regain full control over your thermostat through voice commands.

We hope this guide has been helpful in solving the issue of Nest thermostat disconnection. If you have any further questions or need assistance, please leave a comment below. Thank you for reading, and we’ll see you next time!