re: Tell Me about WiFi Enabled Thermostats

House I bought in January had Nests installed (one upstairs, one downstairs.)

I like the ability to control both via my phone, and I have set to go to Eco mode whenever the fiance and I are at work.

My electric bill has been about half of what it was from my old house which is similar in size. I will say part of it is that my new (complete gut and renovate) house has much better insulation though.