Ecobee Smart Thermostat Premium vs Sensi Touch 2 smart thermostat

The Ecobee Smart Thermostat Premium wins overall, offering a lower price, a higher owner rating, more sensors and alerts, a bundled sensor and trim plate, and a built-in speaker. The Sensi Touch 2 smart thermostat remains a solid, well-reviewed touchscreen alternative.

Sensing and alerts. The Ecobee Smart Thermostat Premium adds TVOC/CO2 monitoring, air-quality/fire/intrusion alerts and a speaker, while the Sensi Touch 2 smart thermostat sticks to temperature and humidity sensing with no built-in alerts.

Yes. Both the Ecobee Smart Thermostat Premium and the Sensi Touch 2 smart thermostat support external temperature sensors for room-by-room balancing, but the Ecobee includes one in the box while the Sensi's is a separate add-on.

The Ecobee Smart Thermostat Premium. It supports temperature, air-quality, fire and intrusion alerts, whereas the Sensi Touch 2 smart thermostat does not include built-in alert types.

Buyers who want the more affordable, more capable touchscreen unit with air-quality sensing, a full alert suite, built-in voice and speaker, and an included sensor and trim plate.

Buyers who want a clean, well-reviewed 4.3-inch touchscreen with dual-band Wi-Fi, voice control and add-on sensor support for room balancing, and who do not need air-quality sensing or the extra alerts.