Amazon offers the second generation Nest Learning Thermostat for $229 with free shipping, which is $20 off list. Existing amazon Visa cardholders can use coupon code THI20ARC to drop the price down to $183.20 shipped. You can sign up now for an Amazon Visa card and save an additional $30.
Created by the same minds that brought you the iPod, Nest learns what temperatures you like, turns itself down when you’re away and can be controlled from anywhere over Wi-Fi. Note that not all home HVACs are Nest-compatible; click here to see if it will work with yours.