Nest Thermostat

Interesting take on actually living with the Nest thermostat:

"When I first got my Nest I felt like I had super powers because it connected to Wi-Fi and enabled me to adjust my home’s temperature using the Nest website or tablet app. This was unheard of for a thermostat at that time. But this positive feature has been eclipsed by negative elements that commandeered control. (And control is what you really want when it comes to using a device.) 

A learning device implies that it will not only pick up on what you usually do, but it will also: 1) allow you to change, and 2) absorb those changes. My Nest learned quite well, but then stopped learning. It remembered but it didn’t look for variations or adapt. It was the equivalent of a printed textbook: Facts, correct or not, become law if written in there and thus will be taught that way until the school chooses a different textbook. 

When I turned the dial to increase the heat to 66 degrees, rather than responding by making the house warmer, or by informing me that it is now working toward this, it read, "in 1 hour and 20 minutes 66 degrees until 10:00PM.” The next day the house temperature plummeted to a punishing 50 degrees (I realize I may be spoiled) for no reason I was privy to. Here, by the way, is another usability heuristic not heeded: visibility of system status."

That article makes me happier with my Honeywell Wi-Fi thermostats. They are very easy to control. It's not flashy, but they just seem to work. I've had one for a long time now and the second one for about a month. Defining a schedule is fairly straightforward, but the temporary overrides are trivial to make. It has controls at the thermostat or you can make changes via the web or the app.