Amazon Smart Air Quality Monitor vs Ecobee Smart Thermostat Premium

Ecobee Smart Thermostat Premium wins convincingly: higher owner rating, 3-year warranty, dual-band Wi-Fi, a color touchscreen, six-platform smart home support and thermostat functionality on top of air monitoring. Amazon Smart Air Quality Monitor is the budget alternative, and the only one of the two sensing particulates and carbon monoxide.

One is a sensor, the other is a thermostat with sensors. The Amazon unit just measures VOCs, PM2.5, carbon monoxide, temperature and humidity and reports into Alexa. The Ecobee measures VOCs, CO2, occupancy, temperature and humidity and can act on poor air or comfort by driving your HVAC directly.

They overlap on VOCs, temperature and humidity. The Amazon Smart Air Quality Monitor adds PM2.5 particulates and carbon monoxide, useful for smoke, cooking and combustion concerns. The Ecobee Smart Thermostat Premium adds CO2 and occupancy sensing instead. Neither measures radon.

The Ecobee Smart Thermostat Premium by a wide margin: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant and IFTTT. The Amazon Smart Air Quality Monitor works exclusively with Alexa and needs an Echo device to be useful.

Choose Amazon Smart Air Quality Monitor if you want the cheapest way to watch VOCs, particulates and carbon monoxide in an Alexa home, with routines that react to your air, and you do not need thermostat features. It is not a substitute for a certified CO alarm.

Choose Ecobee Smart Thermostat Premium if you want a premium thermostat that also monitors VOCs, CO2 and occupancy, integrates with every major platform, and turns air quality data into actual HVAC action, with a 3-year warranty behind it.