Learn about the Nest thermostat’s Safety Temperature and how to set it

Safety Temperature can help protect your home from extremely cold weather. It can help ensure that your pipes won’t freeze even if your thermostat is set to Off, or Eco Temperature, or your home is set to Away. Your heating Safety Temperature is set to 40° F/4° C by default and can be changed in thermostat settings.

Safety Temperature is great for helping prevent your home from going below certain temperatures by turning on heating when the set limits are reached. For instance, if you're away from home on vacation during an extreme cold wave, Safety Temperature can prevent the pipes from freezing, even if the thermostat was turned off or doesn't have a heating schedule. Also, if you leave pets unattended at home, you may wish to set the Safety Temperature higher in the winter to keep your pets comfortable during extreme weather.

You'll never have to worry if you've set the thermostat correctly before you leave, and as long as your Nest thermostat is online, you can check your home's temperature from anywhere with the Nest app.

Safety Temperature is different from the Eco Temperature set during thermostat setup. An Eco Temperature is set to help you save energy while Safety Temperature is set to help protect your home, pets, and plants.

How to set a Safety Temperature 

The Nest thermostat's default heating Safety Temperature is 40° F (4° C) to prevent your home from freezing.

You can set the Safety Temperature on your thermostat or with the Nest app and you'll see different options depending on your region and your system.

Note: To be able to set a Heat to Safety Temperature, your Nest thermostat must be connected to a heating system, or connected to a cooling system to set a Cool to Safety Temperature.

Safety Temperature in the US

Safety Temperature in Europe

Safety temperature screen in the US UK safety temperature screen


On your thermostat 

  1. Press the thermostat's display to bring up the Quick View menu.
  2. Select Settings Nest settings icon.
  3. Choose Safety Temp.
  4. Turn the ring to select the heating Safety Temperature you'd like to change and press the ring to choose it. Turn the ring to change the temperature and press the ring to confirm your change.
  5. Note: You can disable a Safety Temperature by turning the dial to off when choosing a temperature, but we don't recommend this since setting a Safety Temperature helps protect your home.
  6. Choose Done to exit the menu.

With the Nest app 

  1. Select your thermostat.
  2. Tap Settings Nest settings icon.
  3. Tap Safety Temperature.
  4. Drag the sliders to your desired Safety Temperature.

Safety Temperature Notifications 

If the room temperature drops below the set Safety Temperature, your Nest thermostat will automatically start heating.

You'll get a push notification on your phone or tablet, as well as a message in the Nest app. Once temperatures return to normal levels, another notification will let you know.

Important: Notifications about Safety Temperature rely on an active Wi-Fi and internet connection in your home at the time of the notification. If your Wi-Fi network is down during the time when the Safety Temperature is reached, you will not receive the notification. Your thermostat will continue to heat while your home Wi-Fi network is offline.

Was this helpful?
How can we improve it?