A smart thermostat might be the gadget for you. ... Appliances · Smart Thermostats; Best Smart Home Thermostats for 2019 ... CNET's Rating. Looking for the Best Smart Thermostat Works with Alexa & Google Home? Best Smart Thermostats 2019. Best Smart Thermostat. Ecobee4. Best Smart Thermostat: Runner Up. Nest Learning Thermostat v.3. Best Budget Thermostat. Honeywell RTH8580WF Wi-Fi Thermostat. Best For Small Apartments. Ecobee3 Lite. Best for Window AC Units. Sensibo Sky. We round up the best smart thermostats, with clever features such as ... so the units here aren't ranked by number according to our preference.