Nest reset

[DWM]

I bought a new house that has two nest installed and I would like to re-set them to factory settings.  The instructions say to delete the devices from your phone before you can do a factory reset.  I don't have access to the previous owners phone and have no way to delete the nest from his phone.  Is there a way around this?

Thanks 

[johnCNA]

Have you tried the instructions on the Google Support Site?

Set up a device left by a previous resident

1. Perform a factory reset on your device if it hasn’t been done already.
2. Set up your device:
   • Nest thermostat