Google Nest Thermostat E - Programmable Smart Thermostat for Home (A0063)Google Nest Thermostat E Programmable Smart Thermostat for Home, Model: (A0063), T4000EF. Features: Programmable smart thermostat that learns the temperatures you like and programs itself to help you save energy and stay comfortable. Nest Thermostat E is Easy to install. Most people can install it in under 60 minutes, and it works with most heating and cooling systems, and its frosted display is beautifully designed to blend right in. The Nest Leaf