Amazon offers the second-generation Nest Learning Thermostat
, model no. T200577, with a $40 Gift Card
with free shipping
. Assuming you'll use the gift card, that's the lowest total price we could find by $40. (For further comparison, we saw it for $1 more three days ago bundled with a $50 Apple gift card, since expired.) The 2nd-gen improves on its predecessor with a slimmer profile, and 1-piece construction. It "learns" how you set your home's temperature, downloads data and can be controlled from your smartphone (via built-in WiFi), and more. Note that not all home HVACs are Nest-compatible; click here
and click the "compatibility checker" to see if it will work with yours.