My gas utility, National Grid, has some Black Friday deals on smart thermostats, with various models of Google Nest, Emerson Sensi, and ecobee being offered. My electric utility, PSEG-LI, pays you to let them control your central AC settings at peak demand times ($85 the first year and $25 in succeeding years).
My house has 15-year-old builder's specials thermostats, so I'm thinking of replacing them. One concern I have is that I saw a video review of a Google Nest that said its display is proximity activated. I'm concerned that this would be a Shabbos problem. Also, I've seen complaints in Amazon reviews about smart thermostats being inaccurate, showing temperatures that are several degrees off, and that customer support is really bad. So I'm looking for comments from people who are users of smart thermostats.