The
Nest Learning Thermostat learns from the adjustments made to it and uses this
information to create a personal schedule of temperature changes. Once a schedule is created, the Nest
will change the temperature on its own, according to its schedule, without
anyone having to touch it at all.
I, however, am not convinced that this would be very useful for
everyone. Do you really change the
temperature so many times during the week that you need a thermostat to make a
schedule and change the temperature for you? For this aspect of the device to be useful, you would not
only need to change the temperature a lot, but you would need to change the
temperature at consistent times.
The
Nest also has an “Auto-Away” feature, which is designed to sense when the house
is empty and make appropriate temperature changes in order to avoid wasting
money heating or cooling an empty house.
I am skeptical of its ability to accurately determine when a house is
empty or not. First of all, the
Auto-Away sensor detects motion.
This could mean that if there is a long period of inactivity in the room
in which it is located, it could think that nobody is home, even if there are
people in another room. Also,
thermostats are not always placed in central areas of a house, but instead are
often located in out of the way places such as hallways and corners. And so again, it could potentially
think that nobody is home just because nobody passed in front of the
sensors. Finally, the sensors can
mistake the presence of pets for the presence of people.