Best Avm 301 2026

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Last Updated - 27.03.2026

Best Choice

01

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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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

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.
Note: heating valves with which the regulators are compatible without adapters, and that the included black plastic adapters are only suitable for Danfoss valves
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, set of 4, 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.

75,90 €
Value for Money

02

FRITZ!

FRITZ! Smart Energy 250 | Intelligent Current Sensor | Power Consumption Meter for Optimising Energy Costs | Evaluation via App OS | Easy Setup | German Version

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26% Off
9.3

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

Intelligent power sensor for the FRITZ! home network to save and optimise energy
Ideal for reading, monitoring and evaluating the consumption data of a digital electricity meter
FRITZ!Smart Energy 250 is compatible with most digital electricity meters installed in Germany. Further information: fritz.com/service/current sensor
Easy to attach to the digital electricity meter by magnet, powered by batteries or USB port
Convenient monitoring in the FRITZ!App Smart Home, FRITZ!OS or MyFRITZ!Net of all essential data and savings potentials
Box contents: FRITZ!Smart Energy 250, 2x AA batteries (in device), installation instructions (English language not guaranteed)

66,00 € 89,00 €(26% Off off)
03

FRITZ!

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

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19% Off
9.2

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

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
Note: FRITZ!DECT 302 becomes FRITZ!Smart Thermo 302: This is only a product rename. Technically the products are identical, only name and packaging design may vary.
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 to install and set up on all standard radiator valves with connection thread, additional adapter available, seamless combination with other FRITZ! radiator controllers. Please note product dimensions and manufacturer's specifications for compatible heating models.
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

55,98 € 69,00 €(19% Off off)
04

FRITZ!

FRITZ! Smart Thermo 302, Intelligent Radiator Controller, Efficient Heating & High Convenience, Compatible with Standard Radiators, Comfortable Control via App & Display, Easy Setup

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18% 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

Smart radiator controller for the FRITZ!Box home network, automatic and precise control of the room or living temperature, ideal for creating an individual, efficient heating rhythm
Energy-efficient e-paper display and numerous comfort functions, such as frost protection, limescale protection or boost function, window on detection, button lock, push service, group switching and much more
Easy to install and set up on all standard radiator valves with connection thread, additional adapter available
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, new features available via regular, free updates

45,99 € 55,90 €(18% Off off)
05

Oventrop

Oventrop Thermostatic Head Adaptor, M30 x 1.0 to M30 x 1.5, Valve Adaptor # 1011445

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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

for conversion of threaded connection.
Oventrop adaptor, M30 x 1.0 to M30 x 1.5, nickel-plated,
Manufacturer’s no.: 1011445.
For Oventrop valves up to 1998.

12,02 €
06

THR Industrieprodukte

Adaptor Brass for Danfoss RA Valves to M30 x 1.5 with Hex Key

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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

Please note: only fits Danfoss RA valves (20-23 mm) - not RAV (34 mm) and RAVL (26 mm) - please check before purchasing!
Includes hex key
Brass adapter for Danfoss RA valve to M30 x 1.5

7,49 €
07

BLUMKRAFT

BLUMKRAFT Radiator Adapter Compatible with Danfoss RAVL 26mm to M30x1.5 for Thermostat Head M30x1.5 Male Thread

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16% Off
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

Simple: only 4 screws to tighten Allen key is included.
RAVL valves: allows you to adapt modern thermostatic heads (thermostat) with thread 1.5 to RAVL type radiators
Compatible: compatible with AVM, Devolo, Fritz!, Fritz!Dect301 and 302, innogy, Moes, Heimeier HEIM9700-30.700, Homematic, Honeywell, Tado, Tabo...
26 mm: the inner diameter of 26 mm is perfect for RAVL and Landis & Gyr radiators

9,90 € 11,83 €(16% Off off)
08

ET - EUROTRONIC Technology GmbH

Eurotronic Comet Plus Radiator Thermostat

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8.3

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 heating thermostat has a holiday function, frost and limescale protection function and automatic summer and winter time adjustment, which can efficiently save heating costs.
Individually programmable: settings can be made directly on the Comet Plus or with the PROGmatic programming stick (not included) on the PC. The Comet Plus is a purely electric thermostat (not a smart accessory).
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 €
09

tado

tado Smart Radiator Thermostat X, Heating Control via App and Smart Speaker (Alexa, Siri, Google Assistant), Saves Energy and Costs, DIY Installation

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17% Off
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

Saves energy and costs: with the intelligent heating thermostat X from tado, the expert in smart heating, users save an average of 22 percent energy – the more rooms you control, the more you save
SAVE MAXIMUM WITH AI: With "AI-Assist" you save up to 55 percent more energy thanks to automations such as geofencing, window open detection, holiday mode, insights into energy costs, solutions to heating problems and much more. (only EUR 3.99 per month, EUR 29.99 per year)
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)
Important to know: Tado X products are not compatible with Tado V3+ or older
Future-proof technologies: Thanks to Matter, different smart home devices can communicate with each other, at the same time Thread ensures a stable network – this requires the Bridge X (not included) or another Thread Border Router
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 Amazon Alexa, 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

54,98 € 65,99 €(17% Off off)
10

Honeywell Home

Honeywell Home Thera-5 Radiator Thermostatic Head M30 x 1.5 Connection White

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31% Off
8.0

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

White, high-gloss lacquered surfaces made of UV-stabilised plastic with first-class surface design and high colour stability
Thera-5 Radiator Thermostatic Head with Liquid Sensor and M30 x 1.5 Standard Connection to the Valve Body, According to EN 215
Installation instructions: mount the thermostat with a tightening torque of 10 Nm on the radiator valve, horizontal alignment is recommended
Compact dimensions (50 mm diameter, 78 mm length, fully open), stylish modern and ergonomic design
Cage construction and thin-walled surfaces provide durability, response speed and an easy to clean hygienic design

8,24 € 11,99 €(31% Off off)