Google Nest Learning Thermostat 4th Gen Installation And Configuration Manual page 19

Sunblock
Direct sunlight can cause a thermostat's temperature sensor to heat up, so it may think that the ambient
temperature in the room is higher than it actually is.
With Sunblock enabled, the feature will compensate for the direct sunlight to keep the user's home
more comfortable and more true to the real temperature inside.
The user will see the icon above on their thermostat screen and app when Sunblock is active.
Cool to Dry
This feature can be found under the Humidity Helper page in the Temperature Preferences settings page
of the Google Home App. This feature allows the compressor and fan to run longer after it has satisfied
a cooling setpoint to remove excess humidity from the home.
Cool to Dry can be used with any air conditioner or heat pump, but works differently depending on whether
or not the system has its own dehumidification mode.
If the system has a standalone dehumidifier, this option will not appear on the thermostat.
During Pro Setup, the target humidity, minimum indoor temperature, and overcooling limit settings can be
adjusted. These settings control when Cool to Dry can start and how far the indoor temperature can go
below the cooling setpoint before Cool to Dry should stop. Cool to Dry may not always reach the target humidity
before stopping. See the "Configuring complex systems" section for more details.
Smart Humidification
Cold weather can cause condensation on windows and walls if the indoor humidity is too high. With smart
humidification enabled, the feature will automatically reduce the target humidity based on the outdoor
weather. This feature can be found under the Humidity Helper page in the Temperature Preferences
settings page of the Google Home App.
Airwave
Airwave turns the compressor off shortly before reaching the target temperature. Then it runs the fan alone
until it reaches the temperature the user wants.
Airwave learns exactly how much cooling can be done with the compressor off. It automatically shuts off the
compressor at the right time to help maximize energy savings.
Airwave might not activate if there is excess humidity identified by the built-in humidity sensor in the
thermostat (45% RH). In more humid climates, Airwave might never activate.
Key Features and Functionality
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