Best Deviheat 550 2026

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Last Updated - 27.03.2026

Best Choice

01

Mi-Heat

DEVIreg Smart WiFi Digital Thermostat Room Controller for Electric Underfloor Heating Polar White 140F1140

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9.8

Exceptional

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Main highlights

With the DEVIsmart app, you can control as many thermostats in as many places as you want, so you can use different rooms in your home as well as for your holiday home
Thermostats adapt to your daily rhythm and learn when to turn the heater on and off; App communicates via a secure cloud system, like in mobile banking, keeping your data safe
Temperature switch ideal for infrared heating, electric heating, heating plates, surface heating, terrarium heating; room thermostat for heating electric underfloor heating radiators
Flush-mounted thermostats operating temperature: 5-30°C; temperature control range: 5-35°C (room sensor); temperature control range: 5-45°C (floor sensor); sensor: internal and external
Digital WiFi touchscreen thermostat, controlled by app; can communicate with two mobile devices at the same time; a single thermostat can be used with up to ten mobile devices via the DEVIsmart app

249,00 €
02

SKS24

Jussi EFK-550 Thermostat for Underfloor Heating Suitable for Devi Sensors e.g. 550

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9.7

Exceptional

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Main highlights

With adjustable weekly program, easy programming
Real-time clock - automatically switches between summer and winter time
Made in Germany: high quality product with 5 year guarantee
Includes frost protection function, child lock and much more
Ideal replacement for the Devireg 550 (sensor compatible)

199,90 €
03

SKS24

Clock Underfloor Heating Thermostat with Floor Sensor Compatible with Devireg 550

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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

With adjustable weekly programming
Real-time clock – Automatically switches between summer and winter time
Made in Germany: high-quality product with a 5-year guarantee
Includes a frost protection function, parental lock and much more.
Ideal replacement for Devireg 550 (sensor compatible)

199,00 €
04

SKS24

SKS24 Thermostat EFK-550 for Underfloor Heating, Suitable for Devi Sensors, e.g. 550, White, Floor Mounting, Classic, Floor Heating Thermostat

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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 adjustable weekly program, easy programming
Real-time clock - automatically switches between summer and winter time
Made in Germany: high quality product with 5 year guarantee
Includes frost protection function, child lock and much more
Ideal replacement for the Devireg 550 (sensor compatible)

199,00 €
Value for Money

05

DEVI

Devi 140 °F1064 Thermostat for Room and Underfloor Heating 140 °F1065

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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

robustness
Quality/Durability
Durability

164,25 €
06

DEVI

Devi 140F1030

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9.2

Excellent

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Main highlights

robustness
Quality/Durability
Flexible design
Durability

139,98 €
07

SM-PC

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

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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

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 €
08

Mi-Heat

Digital Flush-Mounted Thermostat White with 8 cm Display Diagonal – Weekly Programming – Child Lock – for Electric or Water-Controlled Underfloor Heating

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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

Suitable for hot water heating, electric heating or drive control
Key lock / child lock and frost protection function
Individual weekly program (5+2, 6+1, 7 days), programming remains after a power failure
Illuminated 3.2 inch display with 8 cm diagonal for optimal readability
Digital flush-mounted thermostat / room controller with external floor sensor

31,90 €
09

KETOTEK

KETOTEK Manual Room Thermostat Underfloor Heating Electric Regulator with Sensor 230 V 16 A, Mechanical Thermostat Underfloor Heating Electric Underfloor Heating Controller Flush-Mounted 220 V

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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.

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Main highlights

Specification: Power supply: AC230V 50/60Hz; Power consumption: 5W; Temperature limit range: 25℃~55℃; Protection class: IP20. Package: 1 x thermostat, 1 x 3 m floor sensor, 2 x mounting screws, 1 x user manual (English language not guaranteed).
Safe and easy to use. Turn on the button and then adjust the room temperature by turning the knob. When the built-in air sensor detects that the room temperature reaches the preset temperature, the thermostat underfloor heating electric automatically interrupts the heating.
LED indicator. This electric underfloor heating thermostat has an LED indicator that allows you to easily check whether the underfloor heating works or not. When the LED indicator lights up, it indicates that it is heating.
Flush-mounted, this manual room thermostat is designed to provide automatic on/off control for electric underfloor heating and other electric heating elements. Temperature control range: 5℃~40℃ Output: Max. 16A.
Built-in sensor and external 3m NTC ground sensor. The built-in sensor is used for room temperature detection, and the external probe is used to protect against high floor temperature, which ensures that the maximum floor heating temperature does not exceed 50°C.

22,99 €
10

WENGART

Wengart Room Thermostat Digital Thermostat WG809, AC230V 3A, Programmable LCD Touch Screen, Flush-Mounted for Water Heating, Underfloor Heating, White

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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

The underfloor heating thermostat has a built-in sensor with a measuring accuracy of 0.1 °C, embedded installation, compatible with 86 x 86 mm installation box. Output AC230V, maximum current 3A, easy to install and use
The room thermostat has the function of starting temperature difference, and the starting temperature difference can be adjusted between 0.5 and 10 °C. Example: when the set temperature is 20°C and the starting temperature difference is 1°C, the thermostat will shut off the heater when the room temperature is 21°C and above, and turns on the heater when the room temperature is 19°C and below.
The room thermostat has a white backlight that lights up when the thermostat is operated and automatically turns off after 30 seconds without pressing the button, which is convenient to adjust the thermostat in a dark environment.
The room thermostat has a temperature calibration function. If the measured temperature and the actual temperature of the room have a large difference, an accurate calibration of 0.1 °C can be performed.
The room thermostat has a parameter function to adjust the switch-off memory, and the information can be stored for a long time after the parameter setting when switched off. The room thermostat can lock the buttons. After the lock has become effective, all buttons no longer work to prevent children from accidentally touching it.
The room thermostat has a one-week programming function that can automatically switch to the temperature you need within the set time. There are 6 fixed periods on working days and 2 fixed periods on rest days. At the same time, you can choose 5 days, 6 days or 7 days freely. You can adjust the time and the appropriate temperature as desired.
The room thermostat has a frost protection function. When the measured indoor temperature is below 5°C when switched off, it automatically turns on the heater to prevent the water pipe from freezing.
The room thermostat can freely choose the built-in sensor or external sensor. When using an external sensor, it is suitable for the 3950, 10K = 25°C sensor
The room thermostat adopts touch buttons, and the temperature range can be adjusted to 5-90 °C, and the manual mode or programming mode can be freely selected depending on the application.
The digital thermostat has a large LCD display that can display the room temperature and the set temperature as well as the current heating status, which is convenient for understanding the current status of the thermostat.

21,69 €