Aqara Radiator Thermostat E1 vs Bosch Smart radiator thermostat II [+M]

Bosch Smart radiator thermostat II [+M] wins with its higher owner rating, roughly 2-year battery life, dual Zigbee and Thread connectivity with native Matter, and a child lock. Aqara Radiator Thermostat E1 is cheaper and adds geofencing plus external temperature sensor support.

Connectivity philosophy. The Bosch offers both Zigbee and Thread with Matter built in, so it slots into almost any modern setup. The Aqara is Zigbee-only and leans on an Aqara hub for HomeKit and Matter, in exchange offering geofencing and remote temperature sensors the Bosch cannot use.

Potentially the Aqara Radiator Thermostat E1, because it can read an Aqara Temperature and Humidity Sensor placed across the room instead of relying on the reading next to the hot radiator. The Bosch Smart radiator thermostat II [+M] uses only its built-in sensor.

The Bosch Smart radiator thermostat II [+M] runs about 2 years on two AA cells and owners praise its solid construction. The Aqara Radiator Thermostat E1 is rated around 1 year on two AAs, and a share of long-term users report motor or mounting wear after a year or two.

Choose Aqara Radiator Thermostat E1 if you already run an Aqara hub or Home Assistant, want geofencing to warm the house before you arrive, or value external-sensor accuracy, all at a lower price.

Choose Bosch Smart radiator thermostat II [+M] for the sturdier build, longer battery life, child lock and native Matter over Zigbee or Thread, making it the safer long-term pick across Google Home, Alexa, HomeKit, SmartThings and Home Assistant.