How to set up the Google Nest Thermostat in 5 steps
Steps to set up your Nest Thermostat and to fix common Wi‑Fi and offline issues. First you get what you need, then a clear setup routine and specific causes with concrete fixes.
What you need
- Google Home app on your phone, signed in with the same Google account
- Your Wi‑Fi name (SSID) and password ready
- Router within range of the thermostat
- Access to router settings if you need to check 2.4 GHz versus 5 GHz
Step by step
- Power on the heating systemMake sure the heating system power is on and the thermostat wiring is securely attached.How you know it worked: Thermostat screen turns on or shows the setup welcome.
- Open the Google Home appOpen Google Home and tap '+' to add a new device to your home.How you know it worked: The app shows 'Set up device' or starts searching for devices.
- Follow the in‑app instructionsChoose 'Set up device' > 'New devices' and follow the steps; the app may ask for the code shown on the thermostat display.How you know it worked: The app recognizes the device or asks for the setup code.
- Select your Wi‑Fi networkIn the app pick your Wi‑Fi name and enter the password exactly as it is.How you know it worked: The app says the thermostat is connected to Wi‑Fi.
- Check location and settingsConfirm the thermostat is in the correct home and room in the app.How you know it worked: The thermostat appears in your Google Home list in the right place.
Common problems
Nest Thermostat won't connect to wifiNest Thermostat is offlineNest Thermostat reset
Frequently asked
Will a restart delete my settings?
No. A restart simply reboots the device and keeps your schedules and Wi‑Fi details.
Should I remove the thermostat from my account before resetting?
It's recommended: remove it from the Home app before a full factory reset.
Does Nest work on 5 GHz?
Some Nest thermostats work but they are often more reliable on 2.4 GHz; try 2.4 GHz first if you have problems.
Do Nest Temperature Sensors stay linked after a reset?
Sensors linked to your account usually remain linked, but check them in the app after resetting.
Updated 2026-09-09