Skip to content
DE, Deutsche Version

Smart radiator thermostats

Which thermostat fits your heating?

Five questions about your valve, router and voice assistant. Then you see which systems fit, what they cost for your whole home and where to get them.

Selected by Eric, who works in building automation. The devices are compared, not tested by us.

Technical drawing: smart thermostat head screwed onto a radiator valve with an M30×1.5 thread Thermostat head with display Thread M30×1.5 Valve on the radiator

Fit check

Which valve does your radiator have?

Look at the old thermostat head or the ring below it. Most valves use an M30×1.5 thread. If it says Danfoss, you usually need an adapter.

Not sure? How to identify your valve

Do you have a FRITZ!Box with DECT?

If you make cordless calls through your FRITZ!Box, it has DECT. Then FRITZ! thermostats need no extra hub.

What do you control your home with?

Pick the system you use most.

Do you own one of these devices?

These devices are Thread border routers. With one of them, tado° X, Eve, Aqara W600 and Bosch [+M] need no hub of their own.

  • Apple HomePod or HomePod mini
  • Apple TV 4K
  • Google Nest Hub (2nd gen.)
  • Google Nest Wifi Pro
  • Amazon Echo (4th gen.)
  • Aqara Hub M3 or M200
How many radiators do you want to equip?

Your result

Answer questions 1 to 4. Your result will appear here.

Links marked with * are affiliate links. Advertising disclosure. Estimated prices from retailers, as of 11 Oct 2026. The price at the shop may have changed since. We only list shops with an affiliate programme; other retailers may be cheaper. How we rank

All systems compared

10 systems, sorted by estimated price per thermostat. Details according to manufacturers and retailers.

  • SONOFF

    SONOFF TRVZB

    Zigbee 3.0
    Hub
    any Zigbee 3.0 hub or dongle
    Control
    Apple Home via Matter-Bridge (SONOFF Bridge/iHost), Alexa and Google Home via Zigbee hub
    Home Assistant
    locally
    Subscription
    no

    approx. €28–38 per thermostat

  • SwitchBot

    SwitchBot

    Bluetooth
    Hub
    optional: Hub Mini (Matter) for remote access and voice assistants
    Control
    Apple Home, Alexa and Google Home via Hub Mini
    Home Assistant
    locally
    Subscription
    no

    approx. €32–40 per thermostat

  • Shelly

    Shelly BLU TRV

    Bluetooth
    Hub
    BLU Gateway Gen3 included, up to 5 thermostats per gateway
    Control
    Apple Home, Alexa and Google Home not verified yet
    Home Assistant
    locally
    Subscription
    no

    from approx. €44 per thermostat

  • Aqara

    Aqara W600

    Zigbee or Thread (Matter)
    Hub
    Aqara hub (Zigbee) or a Thread border router
    Control
    Apple Home, Alexa and Google Home directly
    Home Assistant
    locally
    Subscription
    no

    from approx. €50 per thermostat

  • FRITZ!

    FRITZ!DECT 302

    DECT ULE
    Hub
    FRITZ!Box with DECT (except 7312/7412), FRITZ!OS 6.83 or later
    Control
    Apple Home, Alexa and Google Home via FRITZ!Smart Gateway
    Home Assistant
    locally
    Subscription
    no

    approx. €58–63 per thermostat

  • Homematic IP

    Homematic IP pure

    Homematic IP (868 MHz)
    Hub
    Access Point, Home Control Unit or CCU3, usually in the starter kit
    Control
    Apple Home no, Alexa and Google Home directly
    Home Assistant
    locally
    Subscription
    no

    from approx. €59 per thermostat

  • Bosch Smart Home

    Bosch II [+M]

    Zigbee or Thread (Matter)
    Hub
    Smart Home Controller II or a Thread border router
    Control
    Apple Home, Alexa and Google Home directly
    Home Assistant
    locally
    Subscription
    no

    approx. €64–68 per thermostat

  • tado°

    tado° X

    Thread (Matter)
    Hub
    Bridge X or an existing Thread border router
    Control
    Apple Home, Alexa and Google Home directly
    Home Assistant
    via Matter, limited
    Subscription
    optional, Auto-Assist

    from approx. €65 per thermostat

  • Netatmo

    Netatmo

    proprietary
    Hub
    Netatmo Relay, usually in the starter kit, up to 20 thermostats per relay
    Control
    Apple Home, Alexa and Google Home directly
    Home Assistant
    via cloud
    Subscription
    no

    from approx. €80 per thermostat

  • Eve

    Eve Thermo

    Thread (Matter), Bluetooth
    Hub
    no hub of its own, but a Thread border router
    Control
    Apple Home directly, Alexa and Google Home via Matter
    Home Assistant
    locally
    Subscription
    no

    approx. €82–99 per thermostat