Ecobee SmartSensor vs Nest Temperature Sensor

What owners say

Owners of both sensors bought them for the same reason and report the same result: a bedroom or an upstairs floor that was always too hot or too cold finally matches the rest of the house, energy bills come down, and pairing takes minutes. Ecobee SmartSensor owners single out occupancy, which lets the thermostat stop conditioning empty rooms, and the rarely changed coin cell; their complaints are range that gets spotty two floors from the thermostat, a unit that occasionally needed a second pairing attempt and a price that feels steep for a small puck. Nest Temperature Sensor owners praise wiring-free setup in the Google Home app, while buyers in the UK, Italy and the Netherlands report the sensor refusing to activate on thermostats whose region is not supported.