Amazon offers the third-generation
Nest Learning Thermostat in Stainless Steel for
$198 with
free shipping. (
Home Depot charges the same;
B&H Photo Video charges a buck more.) That's the lowest price we could find by $2, although we saw it for $49 less last November. Improving on its predecessor with a slimmer profile and bigger display, this thermostat "learns" how you set your home's temperature, downloads data, and can be controlled from your smartphone via WiFi.