Home Depot offers the factory-refurbished 2nd-Generation Nest Learning Thermostat
with free shipping
. That's $10 under our December refurb mention, $40 off, and the lowest total price we've seen for it in any condition. 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 November 3.