Google Nest Learning Thermostat 4th Gen Installation And Configuration Manual page 20

Key Features and Functionality
Nest Leaf
The Nest Leaf icon appears on the thermostat (and in the Google Home app) to tell a user when their
thermostat is set to an energy-saving temperature. The Leaf encourages the user to choose energy-saving
temperatures that are a little lower or higher than what they might have set in the past.
Time-to-Temp
Estimates how long a user's system takes to heat and cool their home from a manual change to the thermostat,
or through the app.
The estimated time to temperature is based on prior heating and cooling cycles, and will continue to learn
how the equipment performs during heating and cooling to give the user more accurate estimates.
Time-to-Temp estimates will only appear for temperatures that the user has manually set with the
thermostat or the Google Home app.
The Nest Learning Thermostat won't display a Time-to-Temp estimate if continuous heating or cooling is
needed to maintain the temperature that has been selected, or if the temperature fluctuates unexpectedly.
Safety Temperatures
Safety Temperatures can protect a user's home during extreme cold or hot weather. With Safety Temperatures,
when the home reaches a set temperature limit, the thermostat will turn on heating or cooling even if the
thermostat is set to Off. This can help ensure that the pipes won't freeze or the home won't overheat.
Thermostat Lock
Locking the Nest Learning Thermostat prevents people from changing settings or changing the temperature
outside of a restricted range with the thermostat.
Anyone who shares access to the user's home with the Home app will still be able to change the
temperature and settings or unlock the thermostat with the app. The thermostat can be locked in the
Settings menu on the thermostat, or with the Home app. To unlock a thermostat, the user needs to
enter the four digit PIN code on the thermostat, or use the app.
When a Nest thermostat is locked, it will still heat or cool to any temperatures in the user's schedule, even if
they are outside of the locked temperature range. It will also follow a user's Eco Temperatures.
Air Filter Reminders
Air filter reminders can be enabled in the Notifications section of the thermostat settings. The Nest Learning
Thermostat calculates these reminders based on forced air runtimes. The number of hours before sending a
reminder can be configured during the Nest Pro Setup process. A user will need to enable them and indicate
when they last changed their air filter.
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