As one of its daily deals, Home Depot offers the factory-refurbished
2nd-Generation Nest Learning Thermostat, model no. T200477R, for
$149 with
free shipping. That's $11 under our April mention of a new unit and the lowest total price we've seen for it in any condition. (It's also $91 less than you'd pay for a new one today.) It "learns" how you set your home's temperature, downloads data, and can be controlled from your smartphone (via WiFi). Note that not all home HVACs are Nest-compatible;
click here to see if it will work with yours. A 1-year Nest warranty applies. Deal ends today.