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Can a non-migrated Nest thermostat be used with 2 automation systems simultaneously ?

Community Specialist
Community Specialist

Disclaimer: This thread was migrated from our previous version of the Google Nest Community. You can continue to receive updates on your thread issue here or simply ask, browse or more in the new Google Nest Community.

Original Poster: XWired 

On a non-migrated thermostat, I use an access token so the home automation system can manage it.
I am building a new HA system and I would like both systems to be able to manage the Nest device.

1 - Is the access token locked to a certain HA ecosystem ?
2 - Can it be used by more than one system simultaneously ?

Thank you for your assistance


Community Specialist
Community Specialist

I'm so sorry for the delay in our response, but I wanted to hop in here to make sure we addressed your concern. We totally get the frustration in installing such a delicate device, but I'm happy to look into this for you. 

First off, I would suggest using the Compatibility Checker to see if your system is compatible. Then, if it is, I would suggest using this article to help identify the different wires. Your HVAC setup sounds sophisticated enough that I would suggest contacting a pro to come out to help you with this since we'd be unfamiliar with your specific HVAC system to give you the best answer. 

Apologies for a lack of direct answer, but we hope Nest will work in your home. Let us know if we can assist further!

-From Garrett DS,Specialist.