Google - Nest Smart Programmable Wifi Thermostat - Fog - Open Box - fair

Nest 3rd Generation Smart Learning Thermostat: Take control of your home's heating and cooling without lifting a finger with this thermostat, which learns your habits and adjusts to automatically regulate your home's temperature based on your schedule. The Nest Leaf feature alerts you when you choose a temperature that's energy efficient.

Join the millions who love and trust ecobee products with our most affordable thermostat yet: Smart Thermostat Essential. It saves you up to 23%* on your energy bills and is so efficient that it pays for itself in just six months. You'll love how easy it is to use and control, and with effortless installation, you can set it and forget it. *Compared to a hold of 72°F

Amazon Smart Thermostat is ENERGY STAR certified. Easily switch your traditional thermostat and help reduce energy usage. For on-the-go comfort, let Alexa set the temperature, or set it yourself from anywhere with the Alexa app. Amazon Smart Thermostat is compatible with most 24V HVAC systems (like conventional force air, heat pump, radiant boilers, etc). It does not work with 110-240V HVAC systems (like electric baseboard heat). Smart Thermostats require a C-wire (most homes have one) or a C-wire adapter kit (sold separately). Guided installation instructions are included in the Alexa app, and will walk you through checking for a C-wire or options for powering your thermostat.