Google Nest Learning Thermostat 4th Gen Installation And Configuration Manual page 13

Key Features and Functionality
Seasonal Savings
Seasonal Savings is a feature that users may opt into each summer or winter. The goal of
Seasonal Savings is to find
energy savings without sacrificing comfort. The feature gradually adjusts preset temperatures over a 3-5 week period.
After making a small adjustment toward saving energy, Seasonal Savings will wait for the user to experience the new
temperature before making another adjustment. If Seasonal Savings detects that users have become uncomfortable
(based on the frequency of requests for more heating or cooling) then it will stop making adjustments toward saving
energy and return the preset to a comfortable temperature.
Note: If a device does not have a schedule, and a user opts that device into Seasonal Savings, a basic schedule with
only Sleep and Comfort presets will be created.
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