WhichOne › DIY store & garden › heating › heating system › radiator › radiator accessory › radiator thermostat › smart thermostat

The best smart thermostats in comparison

Guaranteed independent and reliable
Millions of satisfied users every year
Last updated on 22.05.2025

Filter

Sort

Brand:Reduced items only:

Best choice

Google Nest Learning Thermostat 3rd Generation, Copper - Smart Thermostat - A Brighter Way To Save Energy

Google

free shipping

show more show less

9,9

Check price

Show on Amazon

Features

Saving energy starts with your thermostat. Your thermostat controls 60 percent of your energy bill. So shouldn t it help you save energy. The Nest Learning Thermostat does. Since 2011, it s saved over 4 billion kWh of energy in millions of homes worldwide. Because it learns from you. It gets to know the temperature that you like while you re at home. And turns itself down when you re away. It even learns how your home warms up or how draughty it is, so it only uses the energy that it needs
Auto-Schedule. Just turn it up and down. It learns the temperatures that you like and creates a schedule for you
Home Away Assist. It automatically adjusts the temperature after you ve left. It can even turn off your hot water if you re away for a few days
Hot water. Now you can control your hot water tank. And give your hot water a boost when you need it
OpenTherm technology. Nest now uses OpenTherm technology to modulate your high-efficiency condensing boiler

tado Wireless Smart Thermostat X – Starter Kit with Bridge X and Stand, Boiler and Hot Water Control via App & Smart Speaker (Alexa, Siri, Google Assistant), Not Compatible with tado V3+

tado

25% off

free shipping

show more show less

9,8

Offer ends in:

04Days

13hours

24minutes

09seconds

Check price

Show on Amazon

Features

OPTIONAL FEEL-GOOD PACKAGE Auto-Assist provides you with insights into the energy costs, information and solutions for heating problems as well as automated geofencing and open-window detection
EASY DIY INSTALLATION, EVEN OFFLINE When connected to a boiler, this smart heater thermostat can regulate hot water suitable for gas-fired boilers or heat pumps (OpenTherm and relay)
CONTROL VIA APP Smart scheduling, advanced geofencing, open-window sensor without additional window contacts and much more the thermostat has numerous features for your heating system
Important to know tado X products are not compatible with tado V3+ or older
FUTURE-PROOF TECHNOLOGY Matter allows different smart home appliances to communicate with each other, while Thread ensures a stable network this requires the Bridge X (included) or another Thread border router

New Hive Thermostat for Heating Control (Combi boilers) Nano 3 (Opentherm), White

Hive

18% off

free shipping

show more show less

9,7

Offer ends in:

05Days

13hours

24minutes

09seconds

Check price

Show on Amazon

Features

New Nano 3 Hub - The latest hub features Wi-Fi connectivity with an improved design, connecting your Hive devices to the internet without messy cables. Now featuring a dual-core processor, it provides fast and reliable performance for large networks of Hive devices.
HIVE Plus 50% off annual plan included with this purchase to help you save even more
Geolocation heating alerts when you leave or return home
Holiday Mode tell Hive your holiday dates and come back to a warm welcome

Meross Smart Thermostat for Combi Boilers and Underfloor Water Heating, Glass Touch Panel, Schedule and Multi-room Function, Hubless, Compatible with Apple HomeKit, Amazon Alexa, Google Assistant

meross

26% off

free shipping

show more show less

9,6

Offer ends in:

15Days

13hours

24minutes

09seconds

Check price

Show on Amazon

Features

* ENERGY SAVING Save up to 30% heating costs! The alexa thermostat supports Muti-room function and open-window detection. Use multiple hubless smart thermostats to control different rooms; When detected window-open(temperature dropped sharply), you will get a window opening notification on phone while the room thermostat will stop heating for 30 minutes to avoid electricity waste.
DUAL TEMPERATURE SENSOR The meross Wi-Fi thermostat has a dual temperature sensor. The built-in sensor measures the air temperature in room, and the external sensor measures the temperature outside room. You can switch the sensor according to different scenarios to better control the heat while preventing overheating. Temperature control range 5-35 C; Accuracy 0.5 C.
SCHEDULE AND FAMILY SHARE Heating control by zone and time for maximum energy savings. In the meross app, you can clearly see the room temperature and set schedule. Support 7 24 schedule and 6 time windows day setting, including temperature control and heating on off for different rooms. If you are not an Apple Home user, you can still use meross app to achieve home sharing control to make your home temperature more comfortable.
EAST TO INSTALL USE NO HUB REQUIRED! The Wi-Fi heating thermostat is compatible with most boiler water underfloor heating systems. With app's install instructions or guide video(after product images on top), you can use the meross thermostat after few minutes. Meross app supports Android(above 6.0) and iOS system (13 or above). Quick touch control directly from elegant glass panel, even without using app.

Recommendation

Honeywell T6 Wired Smart Thermostat - Works with Amazon Alexa

Honeywell Home

free shipping

show more show less

9,5

Check price

Show on Amazon

Features

The Honeywell Home app gives you complete control over your home heating wherever you are, including schedules and automated synchronisation with the thermostat.
Scheduling to suit you. The T6 features a choice of schedule settings to fit your lifestyle, including 7 day, 5 2 day and single day scheduling with up to 6 different time settings per day.
Apple Homekit ready. The T6 is home kit enabled meaning it can be controlled using an Apple device (requires iOS 8.1 or later), as part of a suite of home kit compatible products.
The T6 also works with Google Home and IFTTT

£ 160.42

£ 85.00

KETOTEK WiFi Smart Thermostat for Boiler 3A 220V Compatible with Alexa, Digital White Boiler Thermostat Programmable Tuya/Smart Life APP Remote Control, Dry Contact

KETOTEK

16% off

free shipping

show more show less

9,5

Offer ends in:

10Days

13hours

19minutes

10seconds

Check price

Show on Amazon

Features

Voice Control This WiFi Thermostat is compatible with Alexa and Google Assistant. Connecting to Alexa is as easy as setting up any other Alexa skill. Once connected to Alexa, you can turn on off the thermostat or set the room temperature via your voice, without getting out from under the covers, especially in the winter.
App control Simply connects the thermostat to WiFi to control temperature and settings from your smart phone via Smart Life Tuya App. You can monitor your thermostats, adjust temperatures, create schedules and use a variety of options in the App from anywhere, anytime. Want to control and programme multiple thermostats at the same time? Just create a group directly in the app. 2.4GHz WiFi required (not 5GHz).
Create schedules Choose program mode, manual mode or holiday mode to optimize your heating to fit your lifestyle, and save energy and costs on your energy bill. The program mode features a choice of schedule settings, including 5-2 (weekday and weekend), 6-1 (Sunday different from the rest) and 7-0 (all days the same) scheduling with 6 time periods and temperature settings per day. It does not support different programming day by day.
More Functions This WiFi Thermostat can be configured to detect a rapid drop in room temperature (such as when a window is open) and automatically pause the heating to prevent energy wastage. You can lock the thermostat to prevent others to change temperatures or settings through the wall display. More functions temperature calibration, reset, memory function, anti-freeze function, etc. Power supply AC 90-240V 50 60Hz, Output Max 3A. The thermostat requires a 220V mains power supply.

TP-Link Kasa Smart Thermostat Radiator Valve , Smart Radiator Valve, Energy Saving, LED display Radiator Thermostat Valve , Smart TRV Schedule, Works with Alexa & Google Home, Easy installation(KE100)

TP-Link

33% off

free shipping

show more show less

9,4

Offer ends in:

11Days

13hours

24minutes

09seconds

Check price

Show on Amazon

Features

Geofencing for Free Introducing geofencing support-your home warms as you approach and cools when you leave; No manual tweaks required just seamless comfort and convenience
Open Window Detection KE100 now auto-shuts the heat and enables Frost Protection when the connected window & door sensor (Tapo T110) activates; Enjoy comfort; energy savings and peace of mind
Saving Energy Made Easy- The Kasa Smart Thermostatic Radiator Valve allows you to set heating schedules based on your daily routines to make heating more efficient and save your money
Hands-Free Voice Control- Ask Alexa or Google Assistant to fine-tune your home s temperature; No need to get up from the sofa
Frost Protection - Keep your pipes unfrozen and your house safe; With easy installation, Just simply replace your old radiator valve with Kasa and follow the step-by-step in-app guide
Kasa APP Requirements Version 3.1.4 on IOS or Version 3.1.1 on Android (Doesn't work with Tapo)
Note KE100 Thermostat valve Requires a Kasa Hub KH100 to work, and this information is clearly mentioned on our official website and Amazon website; Customers will need to read the description clearly before making purchase; KE100 Thermostat valve can only control radiator valves and cannot be used to control central boiler or thermostat

£ 29.99

£ 29.99

£ 35.99

£ 53.55

Drayton Wiser Smart Thermostat Heating Control Heating Only - Works with Amazon Alexa, Google Home and IFTTT

Drayton by Schneider Electric

free shipping

show more show less

9,3

Check price

Show on Amazon

Features

System receives software updates via the cloud and supports up to 16 rooms with 32 smart radiator thermostats
Radio Equipment Directive (RED) 2014 53 EU, Batteries Directive 2006 66 EC, RoHS Directive 2011 65 EU
Control your heating with voice commands, Wiser is compatible with voice assistants including Amazon Alexa
Compatible with IFTTT for greater flexibility and convenience

£ 158.97

£ 125.00

£ 254.25

Netatmo Connected and Smart Energy Saving Thermostat - WiFi - Reduce Bills & Control Heating Remotely by App | Compatible with Individual Boilers, NTH01-AMZ

Netatmo

free shipping

show more show less

9,2

Check price

Show on Amazon

Features

CONSUMPTION INFORMATION AND ADVICE view your history and consult your personalized Energy Savings Report to track and optimize your energy usage
QUICK AND EASY TO INSTALL it takes less than an hour to install the Netatmo Smart Thermostat
A SMART THERMOSTAT the Auto-Adapt feature takes into account the outdoor temperature and your home's insulation to make sure your home stays at the temperature you set
COMPATIBILITY the Netatmo Smart Thermostat is compatible with most types of boiler, whichever energy you use electricity, gas, fuel oil, wood or heat pump
DESIGNED BY STARCK your Netatmo Smart Thermostat blends into your home d cor with a design by Philippe Starck and adhesive strips in four colors
IDEAL TEMPERATURE IN EACH ROOM use Netatmo Additional Smart Radiator Valves to turn radiators on and off independently

£ 140.07

£ 90.54

Smart Thermostat for Combi Boiler/Water Underfloor Heating, WiFi Thermostat Works with Apple HomeKit Siri, Alexa, Google Home, Wired Installation, Support Remote Smart Heating Control

Refoss

25% off

free shipping

show more show less

9,2

Offer ends in:

14Days

13hours

09minutes

10seconds

Check price

Show on Amazon

Features

Smart Thermostat Control The WiFi heating thermostat is compatible with most boiler water underfloor heating systems. You can control the heating remotely using the free app Refoss or voice control, which is compatible with Apple HomeKit Siri, Amazon Alexa (Echo, Echo Dot), Google Home, or manual touchscreen control. Only 2.4GHz WiFi is supported, and no Hub is required.
Open Window Detection Function Save energy and reduce electricity bills! When a window is detected as open, the smart thermostat will automatically shut down for 30 minutes to avoid energy waste. The app will also send you notifications to remind you when the window is open.
Dual Temperature Sensor To accurately sense the room temperature for maximum home comfort, we utilize an internal sensor to detect air temperature and an external sensor wire to measure the floor temperature as needed (installing the external sensor wire is necessary for external sensing). You can switch between the sensors based on different scenarios to better control the heat while preventing overheating. Temperature control range 5-35 C; Measurement temperature accuracy 0.1 C.
Schedule and Multi-room Control You can add and delete scheduling functions, supporting up to 8 events per day. The thermostat allows for a 24 7 schedule for different rooms. Multiple Alexa thermostats can be used to control different rooms. The heating system turns on and adjusts the temperature automatically when you re at home and turns off automatically when you go out, based on the schedule you set.
Add Summer Mode Function The summer mode function can be utilized for cooling during the summer and necessitates a cooling-compatible system, such as an air-to-air heat pump system. Please note that certain features mentioned require the latest version of the app. Ensure that you update both your app and firmware. The iOS version has already been released, and the Android version will be available soon.

This ranking is created through algorithmic analysis of millions of products tailored specifically to your search. We aim to find the most suitable product for you based on manufacturer information and price. The ranking reflects our opinion and should serve as a good starting point for your purchase. We would like to point out that we have not tested the products ourselves and link to selected online shops and partners from which we may receive compensation.

You might also be interested in these smart thermostats.

Evohome smart wireless zoning thermostat - works with Alexa

Programming Modes Delayed start and optimum stop allow evohome to intelligently optimise timing. A learning TPI algorithm ensures each zone adapts to the weather and the seasons. Day off mode changes the schedule for all the zones to a pre-set day

~~£ 212.62~~ free shipping

Check price

MOES Smart WiFi Thermostat Water/Gas Boilers Heating, Schedule and Remote Control, Hub-Free, Compatible with Amazon Alexa, Neutral Line Required, Mechanical Button

Child Lock Protection, Peace of Mind - Child lock feature prevents accidental temperature fluctuations, safeguarding your family's well-being without compromise

~~£ 39.99~~ free shipping

Check price

Beok Wifi Thermostat for Gas Boiler Smart Wireless Room Thermostats Wall Digital Thermostat Central Heating Controller Compatible with Tuya App, Alexa, Google Home 3A TGR86WIFI

Programming Thermostat The device has 3 programmable method of 5+2 6+1 7 6 periods for weekday and 2 periods for weekend), with which you can adapt the heating of your house to your lifestyle, so that make you feel warm at home and save energy when you are out.

free shipping

Check price

Bosch Smart Home radiator thermostat II, smart thermostat with app function, compatible with Amazon Alexa, Apple HomeKit, Google Home

Maximum added value You need a Bosch Smart Home controller to integrate the device into your Bosch Smart Home system. The radiator thermostat II is not compatible with Bosch EasyControl

~~£ 58.98~~ free shipping

Check price

Salus RT310RF Wireless Thermostat, White

Thermostat

free shipping

Check price

Jadeshay Smart WiFi Thermostat, Digital Programmable Touch Screen Heating Thermostat, White, Wi-Fi, Modern Style

1. WiFi Control Function The thermostat turns the heating system and gas boilers on and off according to a temperature limit and a preset period of time. Wireless design, which allows you to control the thermostat remotely via the smartphone app "Tuya Smart" or "Smart Life", and enjoy voice control with "Alexa" or "Google Assistant".

~~£ 32.09~~ free shipping

Check price

ENGO E20i Wireless Smart Thermostat 7 Day Programmable Wifi Smart Heating Controller Alexa Google ENGO Smart App Boiler Control (White)

Stylish and Discreet Available in black or white, the compact design fits into any home without being obtrusive

free shipping

Check price

tado Smart Thermostat X – Add-on as Wired Room Thermostat, Heating Control via App & Smart Speaker (Alexa, Siri, Google Assistant), DIY Installation, Not Compatible with V3+

FUTURE-PROOF TECHNOLOGY Matter allows different smart home appliances to communicate with each other, while Thread ensures a stable network this requires the Bridge X (not included) or another Thread border router

~~£ 99.99~~ free shipping

Check price

EZAIoT Smart Thermostat- For Gas/Combi Boilers - Wall Mounted WiFi Temperature Controller - Programmable Room Thermostat - Floor Heating - Alexa and Google Assistant Voice Control

Smart Control & Energy Saving You can use the FREE "Smart Life" app on your mobile phone to control it remotely, or voice-control it with your smart speaker. It supports users to create product sharing home groups for centralised control of multiple products and shared control of family members.

free shipping

Check price

Dreo Smart Electric Space Heater, 1500W Portable Ceramic Heaters for Home, Low energy, Silent Room Heater with Thermostat, 3 Modes 12H Timer, Overheat & Tip Over Protection, Works with Alexa

Unbreakable safety Dreo goes beyond the unexpected to deliver peace of mind with every room heater. The innovative tilt-detection sensor improves accuracy and reliability for better tip-over protection, and built with V0 flame retardant materials, overheat protection, and safety plug.

free shipping

Check price

Heatmiser NeoHub Gen 2 Home Internet Gateway Neo Hub for Use With Heatmiser Thermostat Neo Series Neostat NeoAir NeoPlug LavaTap Smart Home

Seamless Integration The Heatmiser Neo Smart Home App hub allows for easy integration of Neo model devices, enabling centralised control for a smoother user experience

free shipping

Check price

Aqara Smart Radiator Thermostat E1, REQUIRES AQARA ZIGBEE 3.0 HUB, Smart Thermostatic Radiator Valve with Voice Control, Geofencing Support, Compatible with HomeKit, Alexa, Google Assistant and IFTTT

Device Grouping Support In case of having multiple radiators in one room, all of them will be synchronized in the most efficient way based on the actual temperature of the room.

~~£ 49.99~~ free shipping

Check price

The best smart thermostats in comparison

Guaranteed independent and reliable

Features

Features

Features

Features

Features

Features

Features

Features

Features

Features

You might also be interested in these smart thermostats.

Our offer