The Best Smart Thermostats to Level Up Your Home, According to Thousands of Reviews.Best Overall: Google Nest Thermostat E, $169 at homedepot.com.Best Rated: Google Nest Learning 3rd Generation Thermostat, $245 at amazon.com.Best Affordable: Honeywell Home Wi-Fi Programmable Thermostat, $76 at amazon.com.Best for Alexa: Ecobee Smart Thermostat with Voice Control, $240 at amazon.com.Best Quality: Honeywell Home Wi-Fi Smart Color Thermostat, $146 at amazon.com.Best Durable: Emerson Sensi Wi-Fi Smart Thermostat, $93 at amazon.com.Best With Google Home: Ecobee3 Lite Smart Thermostat, $138 at amazon.com.Best Touchscreen: Emerson Sensi Touch Wi-Fi Smart Thermostat, $122 at amazon.