Migrate a Works with Nest account to a Google account

Before You Begin

Install/update the latest Nest app on your phone.
Ensure you know the primary Google Account you want to use (ideally the one you already use for Google Home/Assistant).

If you received Google’s email, you can click Switch to Google in that email and start at step 5 below.

Open the Nest app and sign in to your Nest account.
Tap the settings icon (gear) and choose Migrate to a Google Account.
Review the migration benefits/details and tap Continue with Google.
Select the Google Account you want to use (or create/use another account).
Tap Allow to grant Nest the requested access to your Google Account data.
If prompted, disconnect old Works with Nest connections and consolidate homes into a unified Google Nest home.
Review Google’s privacy documents and your Google Account settings, then tap Continue.
Accept the Google Terms of Service and Nest Terms of Service, then tap Complete migration.
If you’re accepting a home invitation, review access changes and tap I agree.
Choose email preferences and tap Next → Done.

Google Accounts don’t support legacy Works with Nest connections. After migration, reconnect your Nest devices to Alarm.com:

Open the Alarm.com app (or Customer Website) and go to Settings → Manage Devices.
Choose Add Device → Thermostat → Google Nest Thermostat.
Tap Begin Installation and sign in with the primary Google Account that owns the Nest home.
Follow the prompts to authorize and finish linking. Allow a couple of minutes for initialization.

Tip: If you manage multiple Google homes, ensure you’re linking the correct home that contains your Nest device(s).