Ecobee Smart Thermostat Premium vs Eve Room

The Ecobee Smart Thermostat Premium wins overall, leading on rating, connectivity, integrations and sensor count. It measures VOCs, CO2, occupancy, temperature and humidity, connects over dual-band Wi-Fi and Bluetooth, and works with six major platforms, all while controlling your HVAC. The Eve Room is cheaper and offers broader alert coverage, but it is a standalone sensor rather than a thermostat.

One is a thermostat, the other is a sensor. The Ecobee Smart Thermostat Premium is a wired smart thermostat with a 4-inch color touchscreen and a built-in air quality monitor that acts on its readings through HVAC, while the Eve Room is a small, battery-powered air sensor for Apple HomeKit that only measures and reports.

The Ecobee Smart Thermostat Premium. It reads VOCs, CO2, occupancy, temperature and humidity (five sensors), whereas the Eve Room measures VOCs, temperature and humidity (three). The Eve Room does, however, carry a fuller set of temperature, humidity and air quality alerts.

The Ecobee Smart Thermostat Premium, which supports Google Home, Alexa, Apple HomeKit, SmartThings, Home Assistant and IFTTT over dual-band Wi-Fi. The Eve Room is Apple-centric, working with HomeKit, Home Assistant and Matter over Bluetooth and Thread.

Anyone who wants climate control and air sensing in a single always-connected device. The Ecobee Smart Thermostat Premium adds VOC, CO2 and occupancy sensing to a Wi-Fi smart thermostat with a color touchscreen, six-platform support and a 3-year warranty.

HomeKit users who want an affordable, standalone air sensor without changing their thermostat. The Eve Room measures VOCs, temperature and humidity, offers temperature, humidity and air quality alerts, and works with Apple HomeKit, Home Assistant and Matter, though its VOC sensor can be inconsistent.