Amazon Smart Thermostat vs Ecobee Smart Thermostat Premium

The Ecobee Smart Thermostat Premium wins overall. It has a higher owner rating, a three-year warranty, built-in voice control and a speaker, air-quality and CO2 sensing, a bundled remote sensor, and support for every major platform. The Amazon Smart Thermostat's advantage is its lower price.

Feature breadth. The Amazon Smart Thermostat is a basic Alexa-only unit with a temperature sensor and no voice control on the device, while the Ecobee Smart Thermostat Premium adds built-in voice control, an onboard speaker, air-quality and CO2 sensors, a color touchscreen and wide platform support.

Only the Ecobee Smart Thermostat Premium. It includes TVOC and CO2 sensing with air-quality alerts, plus a built-in speaker and voice control via Siri or Alexa. The Amazon Smart Thermostat has neither air-quality sensing nor an onboard speaker or voice control.

The Ecobee Smart Thermostat Premium ships with a remote temperature sensor so you can balance temperatures across rooms. The Amazon Smart Thermostat includes only a trim plate and relies on its single built-in temperature sensor.

Buyers on a tight budget in an Alexa-only home who want simple app control and scheduling, and who do not need voice control, air-quality monitoring, remote sensors or support for other platforms.

Anyone wanting the most fully featured option, with on-device voice control and a speaker, air-quality and CO2 monitoring, a bundled remote sensor, a color touchscreen and compatibility across Alexa, Google Home, Apple Home and more.