Ecobee SmartSensor vs Nest Temperature Sensor

The Ecobee SmartSensor is the stronger accessory, with a longer 3-year warranty, a five-year battery, occupancy detection and temperature alerts. The Nest Temperature Sensor is cheaper but is a temperature-only accessory with no alerts, and each only works with its own brand of thermostat.

Feature depth and ecosystem. The Ecobee SmartSensor adds occupancy detection and temperature alerts and works with Ecobee thermostats, while the Nest Temperature Sensor reads temperature only and pairs exclusively with a compatible Nest Thermostat through Google Home.

The Ecobee SmartSensor is rated for about five years on its coin cell and carries a 3-year warranty, versus a roughly two-year battery and 1-year warranty on the Nest Temperature Sensor, so the Ecobee needs fewer swaps and offers longer coverage.

Ecobee thermostat owners with unevenly heated or cooled homes who want occupancy-aware room balancing, temperature alerts, a long warranty and minimal battery upkeep.

Nest Thermostat owners in supported regions who want the most affordable way to fix a room that runs too hot or too cold, and who do not need humidity, occupancy or alert features.