Prices in euros from Amazon.de, as of 11 June 2026. Prices and availability may differ on Amazon.co.uk.
Top 5 smart thermostats for tenants: tado°, AVM FRITZ!DECT 302, Bosch Smart Home, Eve Thermo, Homematic IP. All retrofittable without structural changes.
Reasoning and all data in the table below
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Editorial rating based on manufacturer specs and Amazon catalogue data. We do not trial products ourselves. How we rate
| Model | Position | Wireless | Hub needed? | App / voice | Battery | Price | Rating | Recommendation |
|---|---|---|---|---|---|---|---|---|
01 · tado° Smart Radiator Thermostat V3+ Starter KitGeofencing all-rounder |
Geofencing | 868 MHz, own bridge | Yes (in set) | iOS/Android, Alexa, Google, HomeKit, Matter | ~6 to 24 months (2× AA) | from €150 | 9,0 |
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02 · AVM FRITZ!DECT 302No extra hub |
FRITZ!Box integration | DECT ULE (FRITZ!Box) | Yes: FRITZ!Box | MyFRITZ!, Smart Home app, Alexa/Google | >1 heating season (3× AA) | from €50 | 8,7 |
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03 · Bosch Smart Home radiator thermostat II [+M]Matter standard |
Matter-capable | Zigbee 3.0 or Matter/Thread | Optional: Matter hub | Alexa, Google, HomeKit (Matter) | >2 years (2× AA) | from €40 | 8,6 |
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04 · Eve Thermo (5th generation)Apple focus |
Made in Germany | Bluetooth LE + Thread (Matter) | Optional: Apple Home hub | HomeKit, Alexa, Google (Matter) | 3 to 6 months (2× AA) | from €65 | 8,4 |
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05 · Homematic IP radiator thermostat (compact)Cloud-free |
eQ-3 Made in Germany | Homematic IP 868 MHz, AES-128 | Yes: access point or CCU3 | iOS/Android, Alexa, Google | about 2 yrs (2× AA) | from €40 | 8,5 |
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Strengths, weaknesses and who each model is really suited to.
Geofencing via smartphone location, “Care & Protect” maintenance detection, best app in the review. Starter kit contains bridge + 2 thermostats. Additional individual thermostats from €70. Geofencing and Auto-Assist only with a paid subscription (€3.99/month).
If you already have a FRITZ!Box, this is by far the cheapest smart heating control, with no extra hub needed. E-ink display, very battery-efficient thanks to DECT ULE. No forced cloud registration. No HomeKit.
Matter-capable out of the box, works with Apple Home, Echo Hub and Google Nest. Built-in open-window detection. Also usable without a Bosch hub via a Matter hub. Good build quality, fair value for money.
Torn between two specific models? Here is the direct comparison:
Yes: through schedules, set-back when you are away and open-window detection, smart thermostats realistically save 5 to 15% of heating energy, depending on heating habits. Those who never turned the heating down manually before get the most out of it.
It depends on the system: Zigbee and Thread models usually need a bridge or hub, while pure Bluetooth models can only be controlled by phone within range. For automation and remote access while out, a hub is practically a must.
Most fit common valves with an M30×1.5 thread; adapters for older brands such as Danfoss are included. They do not work with underfloor or central heating without its own radiator valve.
6 additional thermostats from the current Amazon catalogue, with data sheet values and an editorial assessment.
