Best Thermostats 2025

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Last Updated - 09/06/2025

Best Choice

01

Bosch Smart Home

Bosch Smart Home Radiator Thermostat II, Smart Thermostat with App Function, Compatible with Amazon Alexa, Apple HomeKit, Google Home

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26% 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 also 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 control: operation of the heater directly on the device, via a room thermostat, remotely in the app, fully automated or via voice via Amazon Alexa, Siri and Google Assistant
Comfortable indoor climate: radiator thermostats of a room are combined into a room temperature in the Bosch system and can be precisely controlled via the room thermostat from Bosch
Box contents: 1x radiator thermostat II, 2x AA batteries, 1x Danfoss RA adapter, 1x Danfoss RAVL adapter, Quickstart Guide (11 languages)

58,49 € 79,95 €(26% Off off)
02

AVM

FRITZ!DECT 302 (Intelligent Radiator Controller for the Home Network, for Energy Saving, for All Standard Radiator Valves and FRITZ!Box with DECT Base, FRITZ!OS from Version 6.83)

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16% Off
9.6

Exceptional

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Main highlights

Smart radiator controller to save energy for the FRITZ!Box home network, automatic and precise control of the room or living temperature, ideal for creating an individual, efficient heating rhythm
Please note product dimensions and manufacturer's specifications for compatible heating models
Energy-efficient e-paper display and numerous convenience functions, such as frost protection, limescale protection or boost function, window on detection, button lock, push service, group switching and much more.
Easy installation and setup on all standard radiator valves with connection thread, additional adapter available, seamless combination with FRITZ!DECT 301 and FRITZ!DECT 300 possible
Control via PC, notebook, FRITZ!Fon, smartphone or tablet - even on the go via the Internet and via app, individual heating profiles can be programmed
Connection with FRITZ!Box at the touch of a button and convenient configuration via the FRITZ!Box user interface, for FRITZ!Box with DECT base and FRITZ!OS from version 6.83, new features available via regular, free updates
Box contents: FRITZ!DECT 302, 3 x AA batteries (in device), installation instructions, adapter for Danfoss RA

57,90 € 69,00 €(16% Off off)
03

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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14% 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

With the radiator thermostat – basic, you can save up to 33% on heating costs – thanks to individual temperature gradients with up to 13 changes per day in three adjustable heating profiles and in combination with window-on detection with a window and door contact
The setup and control of the thermostat via the free smartphone app and the toll free cloud service requires connection to the Homematic IP Access Point; this product is no longer compatible with the CCU2 central
Stand-alone operation (push-to-pair) allows direct learning of up to eight Homematic IP window and door contacts (HmIP-SWDM) and direct operation on the device.
Replaces conventional radiator thermostats in just a few simple steps - no intervention in the heating system or draining water is necessary
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 € 34,90 €(14% 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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49% Off
9.3

Excellent

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Main highlights

Ultra-long standby time – Using the energy-saving wireless technologies that promise a longer battery life.
The answers to frequently asked questions about the KE100 KIT can be found at tp-link.com/en/support/faq/3602/.
Smart heating and compatibility – This starter kit is suitable for getting started with smart control of your heating system. You can also buy KE100 to expand it to more rooms. Fits most existing radiator valves (M30 x 1.5mm) with 3 included adapters to maximise compatibility.
Room-by-room comfort – Set the perfect temperature in each room individually. Save your preferred scenario for further use.
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.
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.
Anywhere and Anytime Smart – Control the temperature of your home with the Kasa Smart App from anywhere and anytime. 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.

49,99 € 99,90 €(49% Off off)
05

eqiva

Eqiva Radiator Thermostat Model N, 132231K2

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12% Off
9.1

Excellent

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Main highlights

Universally applicable, suitable for the most common valve manufacturers
Timeless, simple housing, compact design and particularly quiet gearbox
The radiator thermostat is easy to install and does not require heating water drain or intervention in the heating system. No special tools are required, nor does the heater need to be switched off. The union nut attached to the radiator thermostat is universal and can be used without accessories for valves of the most common manufacturers with a thread size of M30 x 1.5 mm.
Ready for immediate use thanks to preset programming
Radiator thermostat for timed regulation of room temperature
Easy to use thanks to the slanted arrangement of the control and display elements, even under unfavourable installation conditions
Easy installation without draining water, without intervention in the heating system, no special tools required
Comfortable and precise adjustment of the target temperature (accurate to 0.5 °C), directly and intuitively on the rotary wheel

19,96 € 22,85 €(12% Off off)
06

SM-PC

SM-PC® digital room thermostat floor heating panel wall heater LED white #a31

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8.9

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

various set-up functions: e.g. calibration of the displayed temperature, operation via keys, connection of several actuators (parallel operation) possible.
Underfloor heating (water operated) via regulation of an actuator (230 V, NC), electric underfloor heating 230 V, max. 3600 watts (external sensor is required), electric wall or ceiling heating (also infrared), max. 3600 watts.
LCD back-lit display (only switches on when operated and switches off after approximately 10 seconds).
Customised weekly programme (5 + 2, 6 + 1, 7 + 0), temperature sensor: integrated NTC sensor for air temperature measurement, colour: white
Assembly: flush-mounted box, diameter: min. 58 mm installation opening, voltage: AC 230 V, 50 Hz, max. Switching capacity: 16 A (= 3,600 watt).

21,79 €
07

meross

Meross Smart Thermostats Boiler WiFi Heating Thermostat Room Thermostat WiFi Thermostat Heating & Cooling Intelligent Wall Thermostat for Siri & Google Voice Misalignment, Remote Control

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22% Off
8.7

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

Introduction of summer mode – we recognise the unique cooling needs that occur during the hot summer months; for this reason, we have introduced summer mode; this function is designed for cooling systems such as air-energy heat pump systems; by activating the summer mode, you can optimise your cooling experience and maintain an ideal room temperature during the hot summer months
High accuracy: 0.1 °C temperature accuracy with an adjustable temperature of 5-35 °C; double sensor system, integrated temperature sensor for accurate air temperature measurement, external temperature sensor for overheating protection of the floor
For Apple HomeKit – meross smart home thermostat supports voice control from Siri, Alexa and Google; supports device control via the Meross app and Apple Home (Apple Watch / Apple TV / HomePod); you can change the current temperature with voice commands; Android users use the Meross app on Android 6.0 or higher
Does not require hub smart boiler thermostat – simply control the heater via app, voice command or automatically according to time windows and scenarios; compatible with most boilers and water-based underfloor heating; WiFi with 2.4 GHz is required
Basic information: Smart boiler thermostat is 8.6 x 8.6 x 4.2 cm; pure white LED backlight, covered by elegant glass pane; package includes: 1 x smart radiator thermostat + 1 x installation instructions (English language not guaranteed) + 1 x sensor + 4 x screws; meross offers two years warranty and lifetime technical support

53,95 € 69,99 €(22% Off off)
08

Tado

tado Smart Radiator Thermostat X, Heating Control via App and Smart Speaker (Siri, Google Assistant), Saves Energy & Costs, DIY Installation, Not Compatible with Tado V3+

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50% 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

Saves energy and costs: With the intelligent heating thermostat X from tado°, the expert in smart heating, users save energy – the more rooms you control, the more you save
Intuitive operation: via touch display, the thermostat can be installed and operated smoothly - the removable battery is charged in about 2 hours with any standard USB-C cable (only 1 x per season required)
For your smart home: In addition to the direct setting on the thermostat, you can also easily control the individual temperature per room via app or via smart speaker with Google Assistant or Apple Siri
Easy DIY installation, also offline: thanks to the included adapters, the thermostat fits almost all radiator valves, whereby the robust metal nut ensures a stable hold on the radiator without risk of leakage (exclusive with extra template)
Control via app: the thermostat offers numerous features for your heating such as intelligent schedules, advanced geofencing, window open detection without additional window contacts and much more

49,99 € 99,99 €(50% Off off)
09

Heimeier

HEIMEIER K Thermostat Head White With Zero Setting

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8.2

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

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

18,02 €
10

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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7.9

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

Optimal adaptation to weather conditions: The Comet Plus has a holiday function, frost and limescale protection function and an automatic summer and winter time adjustment, which can save you on heating costs.
Individually programmable: The settings can be made directly on the Comet Plus or even more comfortably using the PROGmatic programming stick (not included) on the PC.
Easy to use: The Comet Plus energy saving controller is easy to install and operate. It is valve-friendly thanks to the Eurotronic valve protection and also fits many other well-known radiator valves.
Box contents: Comet Plus energy-saving controller, instruction manual DE (other languages on request), 3 adapters (Danfoss RA, RAV, RAVL), 2 x AA Mignon batteries, dimensions: 65 x 54 x 85 mm, colour: white
AUTOMATIC ROOM VENTILATION Thanks to the window open detection, the radiator thermostat detects directly when a room is being ventilated and closes the valve immediately to save energy.

17,99 €