Setting up new thermostat at new house. How do I cancel my old house, nest thermostat settings, and

[bwstch15]

I moved to a new house and purchased a new nest thermostat and I have had an old nest thermostat at my old house. How do I get rid of that and sign in for a new nest thermostat. 

[David_K]

Factory reset the old thermostat and delete the home structure for it. Create a new home structure for your new home and new thermostat, then setup your new thermostat in the new home structure.

Restart or reset a Nest thermostat - Google Nest Help
Manage homes and products with the Nest app - Google Nest Help
Share a home & devices in the Google Home app - Google Nest Help

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

Nest Thermostat
For the Nest Thermostat model, use the Google Home app. The QR code and setup key are physically printed on the back of the thermostat. Follow these steps:
Get started with your Nest Thermostat - Google Nest Help

Nest Thermostat E and Nest Learning Thermostat
For Nest Thermostat E and Nest Learning Thermostat models, use the Nest app. The QR code and setup key are in the settings on the thermostat itself and are not printed on the device. Follow these steps:
Add your Nest thermostat to the Nest app - Google Nest Help