Ecobee offers its factory-refurbished 2nd-generation Ecobee Ecobee3 Wireless Thermostat with Remote Sensor, model no. EB-STATE3-02, for $179 with free shipping. That's $20 under our November mention of a new one and the lowest total price we could find by $59 for a new item. It includes one remote sensor (with support for up to 32), which can track temperatures across your home for more accurate temperature settings. It also features a color touchscreen, timer, and remote control smartphone app. A 1-year Ecobee warranty applies.