Best Thermostats 2026

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Last Updated - 03.02.2026

Best Choice

01

eqiva

eqiva Electronic Radiator Thermostat Model N with Boost Function and Quiet Compact Gearbox Set of 5

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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

Timeless, simple housing and compact design, particularly quiet gearbox
Reduces the energy consumption of your heater by up to 30 percent, easy to install
Ready for immediate use thanks to preset programming, individual programming possible for every day
Easy to use thanks to the slanted arrangement of the control and display elements
Automatic heating and saving in all rooms, automatic lowering of the temperature when ventilating

81,11 €
02

eqiva

eqiva Electronic Radiator Thermostat Model N with Boost Function and Quiet Compact Gearbox Set of 5

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9.7

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

Timeless, simple housing and compact design, particularly quiet gearbox
Reduces the energy consumption of your heater by up to 30 percent, easy to install
Ready for immediate use thanks to preset programming, individual programming possible for every day
Easy to use thanks to the slanted arrangement of the control and display elements
Automatic heating and saving in all rooms, automatic lowering of the temperature when ventilating

74,99 €
Value for Money

03

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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30% 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

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

14,09 € 19,99 €(30% Off off)
04

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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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

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

10,49 €
05

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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15% 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

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.

24,65 € 29,00 €(15% Off off)
06

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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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

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.

16,95 €
07

eqiva

Eqiva Radiator Thermostat Model N, 132231K2

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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

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

19,95 €
08

eqiva

Eqiva Radiator Thermostat Model N, 132231K2

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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.

Show more
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

17,90 €
09

Heimeier

HEIMEIER K Thermostat Head White With Zero Setting

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17% Off
8.4

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

20,74 € 24,99 €(17% Off off)
10

Heimeier

HEIMEIER K Thermostat Head White With Zero Setting

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8.1

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.

Show more
Main highlights

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

15,69 €