Best Thermostats 2026

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Last Updated - 27.03.2026

Best Choice

01

Bosch

Bosch Smart Home Radiator Thermostat II [+M], Smart Thermostat, Flexible Use in Bosch Smart Home System or Cross-Manufacturers in Matte Systems, Anthracite

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11% Off
9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smart temperature control: heating thermostat ensures room-accurate and individually adjustable feel-good temperature, whose values are displayed in the app
Save energy: smart thermostat heats only according to individual needs and can be configured via time programs, heating schedules, scenarios and clever services to avoid unnecessary heating
Maximum added value in the system: a Bosch Smart Home controller is required for integration into the Bosch Smart Home system. The radiator thermostat II is not compatible with Bosch EasyControl
Flexible use: can be integrated with the Bosch Smart Home controller in the Bosch Smart Home system or without a controller in matte systems. Use can be selected during installation
Flexible control: operation of the heater directly on the device, via a room thermostat, remotely in the app, fully automated or possible by voice
Comfortable indoor climate: radiator thermostats of a room are combined into a room temperature in the Bosch Smart Home system and can be precisely controlled via the room thermostat

58,76 € 65,97 €(11% Off off)
02

Homematic IP

Homematic IP Smart Home Wall Thermostat with Humidity Sensor, Digital Thermostat for Radiator/Underfloor Heating with App, Temperature Measurement, Energy Saving, 156669A0

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9.7

Exceptional

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Main highlights

Operation requires connection to one of the following solutions: Homematic IP Access Point with free smartphone app and toll free cloud service; Central CCU3 with local interface WebUI (no longer compatible with the CCU2 headquarter); third-party partner solutions.
Measures target and actual temperature as well as humidity. Time-controlled regulation of the room temperature via Homematic IP radiator thermostats, underfloor heating actuators or switching sockets.
Has an illuminated display and can be placed freely in the room thanks to the radio communication
Easy integration into existing switch series from leading manufacturers: Berker, Gira, Merten, Jung and Elso
Convenient installation via double-sided tape, with screws and dowels or directly on a flush-mounted box possible
Comfortable voice control with Alexa, e.g. via Echo in conjunction with the Homematic IP Access Point.

45,99 €
03

TP-Link

TP-Link Kasa KE100 Smart Radiator Thermostat, Accessory Product, Energy Saving, Schedule, Control on the Go via App, Alexa and Google Assistant, Hub Required, White, 56.6 x 56.5 x 83.93 mm

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16% Off
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile compatibility – Fits most radiator valve threads (M30x1.5) and the six included adapters (RA, RAV, RAVL, CAL, M28 and GIA) ensure more compatibility. -
Ultra-long standby time – Using the energy-saving wireless technologies that promise a longer battery life.
Smart anywhere and any time – Control the temperature of your home with the Kasa Smart App from anywhere and any time. Set schedules to automate your heating that matches your daily routines. Open window detection – KE100 can now work with Tapo T110. Please add Tapo T110 via the KH100 hub in the Kasa app.
Room-by-room comfort – Set the perfect temperature in each room individually. Save your preferred scenario for further use.
Please note that the Kasa KE100 can only be controlled via the Kasa app and not via the Tapo app. Tapo sensors (Tapo T110, Tapo T310, Tapo T315) can be set up in the Kasa app. Please add the Tapo sensors via the KH100 hub in the Kasa app. The Kasa KE100 kit only supports 2.4GHz WiFi, not 5GHz.
One for all – Each hub can connect and control up to 32 radiators, with the Kasa app you can combine and control all radiators. All rooms under control.
Matter certified – Users can connect the KE100 locally to Apple Home, Amazon Alexa, Google Home, Samsung SmartThings or other Matter-enabled smart home platforms. *Kasa Hub required. *Please update the Kasa app and KH100 firmware to the latest version. 1. Go to the KH100 Hub page in the app, then go to Device Settings > Mount to Matter to find Matter code. 2. Follow the Matter setup process to configure KH100. 3. All other Kasa Hub products, such as TRVs and sensors, are synchronised with third-party platforms.
Easy installation – Simply replace your old radiator valve with Kasa and follow the step-by-step instructions (English language not guaranteed) in the app for installation. You can do all this yourself without difficulty.
Child lock – Prevent children from accidentally operating your radiator.
Caution. Please note that this thermostat must work together with a hub, you must have KE100 KIT in advance. KE100 cannot work with the Tapo H100 and Tapo H200 hub, but only with the hub in the KE100 kit.

20,95 € 25,00 €(16% Off off)
Value for Money

04

TP-Link

Kasa Smart Radiator Thermostat KE100 Kit, Digital Thermostat Heating with Hub, Energy Saving, Schedule, Control on the Go via App, Alexa and Google Assistant, Easy Installation and Use

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32% Off
9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile compatibility – Fits most radiator valve threads (M30x1.5) and the six included adapters (RA, RAV, RAVL, CAL, M28 and GIA) ensure more compatibility. - From version 1.20 and above versions, 6 adapters are provided.
Up to 32 radiators – each hub can connect and manage up to 32 radiators.
Time plan and timer: make sure it is as warm as you need it with presets and schedules that fit your life.
Remote control: automatically turns off the heater and activates frost protection when the connected window and door sensor (Tapo T110) is triggered. 1) Open the Kasa Smart App > Search the KH100 > Tap to add the Tapo sensor to the same KH100 as the KE100. 2) Go to the app home page > Search KE100 > Tap to set the temperature correction/detection of the open window.
Please note that the Kasa KE100 kit can be used via the Kasa app and not via the Tapo app. Tapo sensors (Tapo T110, Tapo T310, Tapo T315) can be set up in the Kasa app. Please add the Tapo sensors via the KH100 hub in the Kasa app. The Kasa KE100 kit only supports 2.4GHz WiFi, not 5GHz.
Matter certified – Users can connect the KE100 locally to Apple Home, Amazon Alexa, Google Home, Samsung SmartThings or other Matter-enabled smart home platforms. *Kasa Hub required. *Please update the Kasa app and KH100 firmware to the latest version. 1. Go to the KH100 Hub page in the app, then go to Device Settings > Mount to Matter to find Matter code. 2. Follow the Matter setup process to configure KH100. 3. All other Kasa Hub products, such as TRVs and sensors, are synchronised with third-party platforms.
Frost protection – so that your pipes do not freeze and your home is safe.
Free geofencing: your house heats up automatically when you approach and turns off when you are away.
0.1 °C measurement accuracy – Set the perfect temperature for each room individually and regulate the heating of your home according to zones. No more wasting energy on empty spaces.

29,40 € 42,99 €(32% Off off)
05

DEWENWILS

DEWENWILS Temperature Controller Temperature Monitor DHTCS01A

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23% Off
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Application Ideal for incubators, reptile rooms, radiators, greenhouses, refrigerators, aquariums, fans and ovens. Wherever precise temperature and time control is needed, the socket ensures convenient and automatic temperature control
VA LCD display: the digital temperature control socket has a large VA display with German display, which is clear to read even in low light; after 30 seconds of no operation, the display automatically turns off and can be reactivated at the touch of a button
Temperature controller: supports heating and cooling mode, controls heating and cooling devices separately, and automatically turns them on or off according to the set temperature range. The calibration function corrects deviations between measured and actual ambient temperature
Technical data: thermostat socket, 16A, 230V; temperature control range: -40°C to 120°C; temperature accuracy: 0.1°C; equipped with a sensitive metal sensor for precise temperature control
MULTIFUNCTIONAL TEMPERATURE SWITCH Features a memory function that is automatically restored after a power failure. In addition, it offers a separate timer function for timed use of household appliances, including cycle timer and on/off timer

15,49 € 19,99 €(23% Off off)
06

Heimeier

HEIMEIER K Thermostat Head White With Zero Setting

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29% Off
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Suitable for Heimeier thermostat valve bases
Knurled nut: M 30 x 1.5
For other manufacturers, please order matching adapter

17,71 € 24,99 €(29% Off off)
07

BEOK CONTROLS

BEOK CONTROLS TOL47WIFI Underfloor Heating Thermostat Underfloor Heating WiFi for Water Heating, Intelligent Compatible with Alexa, Tuya Smart Life App 3A

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Weekly programming: the room thermostat is equipped with a programming mode, a manual mode and a temporary manual mode. The programming mode includes 5+2/6+1/7 options to maximise comfort and energy saving strategies that allow you to adjust the heating in your home to your lifestyle. Keep your home warm and cosy when you are at home, and save energy when you are absent.
Packing list: 1 x flush-mounted thermostat, 2 x mounting screws, 1 x instruction manual (English language not guaranteed); Voltage: AC 100-240 V, 50/60 Hz, Load current: 3 A; Dimension: 8.5 x 8.5 x 4.2 cm.
Other functions: adjustable range from 5 to 60°C; large LCD display with adjustable brightness, clear and easy to read even in the dark; Other functions: Temperature calibration, power failure memory function, child lock, frost protection function, high temperature protection, starting temperature difference and more.
Easy control via app: This intelligent thermostat is suitable for controlling water underfloor heating devices, such as thermal head, motorised valves and so on. You can control the water underfloor heating thermostat, check the current status, change the temperature settings, create intelligent scenes, share the device with your family, etc. anytime and anywhere via the "TUYA" or "Smart Life" app; 2.4 GHz WiFi is required.
Compatible with Google Home and Alexa: Quickly connects to your mobile phone via Bluetooth and Wi-Fi with simple steps; smart home integration and heating is controlled by voice via Amazon Alexa and Google Assistant. Simply send a voice command to change the current temperature or turn a device on/off (e.g. Alexa, set the living room to 20°).

37,99 €
08

SONOFF

SONOFF Smart Radiator Thermostat TRVZB, Smart Heating Thermostat with App Function, Zigbee Thermostat Requires Zigbee 3.0 Hub, Compatible with Amazon Alexa/Home Assistant

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42% Off
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Valve supports percentage opening: Supports opening ratios from 0% to 100%, with an accuracy of 1%. The aperture ratio can be used as an execution action for manual scenes and automatic scenes.
Smart control: SONOFF Zigbee radiator thermostat is equipped with a variety of intelligent functions, including ewelink app remote control, setting schedules, group control, query of historical data, etc.
Home-assistant compatible: Seamless integration with Home Assistant via Zigbee2MQTT and provides intelligent thermostat control, energy efficiency and convenience for effortless management of your home's heating system.
Historical data: Maximum support of 6 months of historical data query, you know the daily/weekly/monthly heating consumption by querying the usage history.
Compatible with most valves: The TRVZB radiator thermostat fits existing M30 x 1.5 mm radiator valves and can be mounted directly or with our adapters on most radiator valves. (Adapter RA/RAV/RAVL/CAL/GIA/M28 are included). Please note: requires use with a Zigebee 3.0 hub. Supports SONOFF ZBDongle-P, ZBongle-E, ZBBridge Pro, NSPanel Pro, ihost.

22,38 € 38,50 €(42% Off off)
09

Homematic IP

Homematic IP Smart Home Radiator Thermostat – Basic, Digital, for Heater, Control via App, Alexa, Google Assistant, Easy Installation, Energy Savings, 153412A3

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With the basic radiator thermostat, you can save up to 33% on heating costs– thanks to individual temperature schedules with up to 13 changes per day across three adjustable heating profiles and in combination with open-window detection using a window and door contact.
The setup and control of the thermostat via the free smartphone app and the free cloud service requires connection to the Homematic IP Access Point. This product is no longer compatible with the CCU2 central unit.
Stand-alone operation (push-to-pair) allows direct pairing of up to eight Homematic IP window and door contacts (HmIP-SWDM) and direct control on the device.
Replaces conventional radiator thermostats in just a few simple steps– no intervention in the heating system or draining of water is required.
Ready for immediate use thanks to preset heating profile, which can be manually adjusted if required (individual temperature gradients with up to 13 changes per day).

29,95 €
10

Danfoss

Danfoss RA 015G3090 Radiator Thermostat - Precise Temperature Control, Energy Saving & Year-Round Comfort - 23 mm Neck Diameter, Easy Installation for Reliable & Efficient Heating Performance

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36% Off
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Unique RA-Click connector for quick and easy installation - for DIY enthusiasts and professionals
Top quality based on 80 years of experience
Fast response time helps to reduce your energy consumption
Classic and reliable liquid-filled thermostatic head
Best in class control accuracy (0.2 K) The lower the CA value, the more accurate the thermostat head maintains the desired room temperature

12,70 € 19,99 €(36% Off off)