How to “re-find” my Nest Thermsostat

[Shaneyb72]

I have a Nest E thermostat in a summer home I have.  When I left last fall I set it where I wanted it to be for winter and headed south.  I never really opened the app on my iPhone at all while I was gone.  Now I’m back north and when I opened the Nest app, I was logged out.  And now I have no idea how to log in.  I tried logging into Nest directly using the username and password I had saved in a password app.  But it said that was incorrect.  So then I tried logging into Nest through Google.  I have 2 different Google accounts.  I tried both, but neither bring up my thermostat.

I tried adding the Nest as a new device…but it says my Nest is already associated with an account.  But clearly I have no idea what account or how to log into that account!

Please help!!

[David_K]

@Shaneyb72 

First check which model of thermostat you have:
How to tell which Nest thermostat you have - Google Nest Help

Important: Before you reset your thermostat, write down the wiring information so you can easily enter your thermostat's wiring if needed. On your thermostat, go to Settings > Equipment. You might want to do this for other settings, such as system heating type, and safety temperature as well.

Nest Thermostat (2020), Nest Learning Thermostat (4th gen)

1. On the thermostat, go to Settings > Account > Disconnect.
2. Follow the setup steps: Get started with your Nest Thermostat - Google Nest Help

Setup these models using the Google Home app. The QR code and setup key are physically printed on the back of the thermostat for Nest Thermostat (2020) and will be displayed on screen for Nest Learning Thermostat (4th gen).

Nest Thermostat E, Nest Learning Thermostat (1st, 2nd, 3rd gen)

1. Go to Settings > Reset > Account connection. If you don't see this option, you'll need to select All settings.
2. Follow the setup steps: Add your Nest thermostat to the Nest app - Google Nest Help

Setup these models using the Nest app. The QR code and setup key are in the settings on the thermostat itself and are not printed on the device.