For the first time there's a programmable thermostat that "learns" what we consider to be normal. It programs itself by our habits, learning what we like to wake up to, go to bed to and come home to. Within a week of being installed, it programs our personal likes and adjusts to our comings and goings no matter what the season.
It's easy as pie to use, just connect and walk away. Use it just like you do a regular thermostat, but this smarty pants can be connected to a home wireless system to allow you to adjust the temp AFTER you've left home from a PC, Smartphone or tablet. And for all of us obsessive-compulsive geeks, you can check daily energy use through an Energy History feature. I will share that I keep a Utilities file, going back several years of energy costs. Kilowatt usage/cost/and little arrows pointing up or down, they tell me when we are wasting or living too big for our britches!
This brainy little device has a Nest Leaf feature that tells you when you are saving energy. It even gives you tips on how to make energy wise decisions around the house... pats on the head! Schmart, very schmart!!!