How Nest thermostats learn
Your Nest thermostat will use learning features to help keep you comfortable and save energy. After it’s installed, your thermostat will learn every time anyone walks in front of it or adjusts the temperature.
Teach your Nest thermostat to save energy:
Your Nest thermostat starts learning from you on day one. But it will take several days to finish learning and start using a temperature schedule.
Note: Nest thermostats learn a different schedule for each temperature mode. For instance, if you currently have it set to Heat, your thermostat will learn the temperatures you like for that mode. So if you have heating and cooling, your thermostat will create separate schedules for Heat, one for Cool, and another for Heat•Cool.
During the learning period, it’s up to you to teach your Nest thermostat good habits to help save energy. Turn it down before you go to bed, before you leave for work, or any time you would turn down a regular thermostat to save energy. Your thermostat will learn what temperatures you like and when you want them, and create a temperature schedule to help save energy and keep you comfortable.
When it’s finished learning, your thermostat will know when to automatically turn the temperature up or down for each day of the week. You can see the results of teaching your Nest thermostat good habits in your Energy History.
Note: If you have a Nest Thermostat E you can choose either Auto-Schedule or Basic Schedule during setup. If you choose Basic Schedule, your thermostat will not learn from your temperature adjustments.
How your Nest thermostat learns
Learning on day one:
If you adjust the temperature on the first day, your Nest thermostat will hold that temperature until someone changes it. For instance, if you set your thermostat to 70ºF (21°C), it will stay at that temperature until it’s changed.
When you turn the ring to choose a temperature, you may notice a green leaf on the thermostat display, this is the Nest Leaf . You’ll see the Nest Leaf when you’ve chosen a temperature that’s more energy efficient, and you can use the Nest Leaf as a guide to help you save energy.
Early-On and True Radiant are learning features that your Nest thermostat can use from day one. Which one your thermostat uses depends on what type of system you have, but both do essentially the same thing. They can automatically turn on your system early to meet a scheduled temperature. For example, if you schedule your home to be 70ºF (21°C) at 7:30am, your thermostat might turn on the heat early at 7am so your home is comfortable when you wake up. Exactly how early it will turn on depends on how quickly your home heats and cools, how efficient your system is, and the weather.
Keep in mind that your Nest thermostat won’t automatically turn on your system early to meet a scheduled temperature when it’s set to Eco Temperatures because it’s trying to help save energy.
Learning on day two:
On day two, your thermostat will keep learning a personalized heating or cooling schedule using any temperatures you’ve set. Your thermostat will also try to learn when you’re home or away by how often you adjust the temperature or walk in front of it.
If you don’t like the scheduled temperature your thermostat learned from day one, simply turn the ring. Any changes you make will help set your schedule for the following days.
Note: Your Nest thermostat starts a new day at midnight. Adjustments made very late at night may not affect your early morning schedule.
After a few days:
After a few days, your Nest thermostat will have learned a basic schedule for you and your home. Your thermostat will keep learning, and will continue to make changes to this basic schedule. You can view or adjust this schedule on your thermostat or with the Nest app.
Your Nest thermostat will keep learning, and will continue to make changes to this basic schedule.
After about one week:
After about a week, your thermostat will have learned your schedule. The Nest thermostat will never stop learning, but now it will be less sensitive to each change you make. Going forward, your Nest thermostat will only learn from a pattern of at least two similar changes.
Examples of similar changes are:
– Turning the Nest thermostat to the same temperature at about the same time two weekdays in a row (such as Monday and Tuesday) to learn a weekday change.
– Turning the Nest thermostat to the same temperature at about the same time on the same day two weeks in a row (such as two Mondays in a row) to learn a specific day change.
– Turning the Nest thermostat to the same temperature on each weekend day twice in a row (Saturday and Sunday) to make a weekend change.
– Make a change on a weekday and a weekend day (such as Friday and then a similar change on Saturday) and the Nest thermostat will learn that change for all seven days of the week.
Other learning features
Time-to-Temperature is an estimate of how long it will take to heat or cool your home to the temperature you’ve chosen. Home/Away Assist can help you save energy by automatically switching your thermostat to Eco Temperatures when no one’s home. These features will be available after about two weeks when your Nest thermostat learns about your home and your schedule.