The best connected thermostats in the UK 2023

Connected thermostats do more than manage your home's heating and cooling. These smart devices are compatible with apps that allow you to adjust your thermostat from your phone, wherever you are. And if you choose a device that is compatible with Alexa, Google Assistant and Siri, it will allow you to easily integrate it into your connected home's home automation system.

Honeywell Home T6 1

Best value for money

Honeywell Home T6

The best connected thermostat in 2021

To have remote control of your heating system, simply install the Apple Homekit app and get the Honeywell Home T6 smart thermostat.

127 £ on Amazon

The Honeywell Home T6 hangs on the wall. It has a sober and elegant design. This simplicity is complemented by its small size, which allows it to blend in with the decor. Even better, this connected thermostat has all the features you need to remotely control your home heating system. Among other things, it provides you with an intelligent box that can adjust the temperature according to your needs.

The presence of its backlit touch screen makes handling and setting more intuitive. Of course, it remains usable even if you are not connected to the dedicated application. The device is perfectly compatible with several voice commands such as Apple HomeKit, Amazon Alexa, Google Home or IFTTT. Its programmable capacity adapts it to your daily habit.

Ketotek KTF0163A

Best value for money

Ketotek KTF0163A

The best entry-level connected thermostat

Easy to install thanks to its simplified wiring system, the Ketotek KTF0163A is a wired room thermostat designed to control underfloor heating. Ideal for smart buyers.

35,99 £ on Amazon

The Ketotek KTF0163A works with both voice commands, including Echo Alexa, Google Home and Tuya, and Wi-Fi App commands. If you chose the Wi-Fi option, downloading the Smart Life app will be essential. In addition, programming this wired connected thermostat is a breeze. Whether you are at home or on vacation, the device will create a warm atmosphere in the home.

In order to save energy, the Ketotek KTF0163A has an intelligent detection mechanism for open windows or a drop in temperature. It instantly turns off the heat. Among its interesting features are the storage of setting data, child safety, protection against sudden temperature changes ...

Pack thermostat + tête thermostatique Netatmo 2

Best value for money

Pack thermostat + tête thermostatique Netatmo

The best high-end connected thermostat

This Netatmo pack will bring the final touch to a fully connected home. It guarantees a reduced energy consumption and a personalized heating profile.

191 £ on Amazon

Atrue reference in the field, the Netatmo connected thermostat that makes up this pack from the same brand can be easily controlled remotely via a smartphone, tablet, computer or by voice command. Compatible with a wide variety of boilers (oil, wood or gas), it offers a very practical use. The on-screen display, although basic, allows you to manually change the temperature at the touch of a button.

Moreover, this Netatmo pack is sold with a thermostatic head. This allows it to control hot water radiators with remarkable precision. The Energy app works on both iOS and Android. Thanks to this innovative option, you will be able to manage your heating schedule. To do this, fill in all the information about your schedules (sleep, work, etc.).

Salus iT500

A great choice

Salus iT500

Better optimization of energy consumption

The biggest advantage of the Salus iT500 connected thermostat is its ability to reduce your heating consumption to the bare minimum. Installation is also simple.

162 £ on Amazon

The Salus iT500 is packed with advanced features that will make you enjoy a more comfortable use. Smart, this connected thermostat is easy to program via an Android smartphone or PC. The best part is that you don't always have to be on site. Its receiver is powered directly by the boiler while the transmitter board requires 2 free AA batteries.

The Salus iT500 connected thermostat has a touch screen on which information on the room temperature is displayed. Transportable, this device will be able to accompany you during your travels and obviously in case of moving. The ITG 500 must be connected to your Internet box using the ADSL cable also provided.

Buying guide • November 2023

Best connected thermostat

Any specific needs?

The best connected thermostat in 2021

The best entry-level connected thermostat

The best high-end connected thermostat

Better optimization of energy consumption

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Comparison table of the best connected thermostats

Honeywell Home T6 3
Ketotek KTF0163A
Pack thermostat + tête thermostatique Netatmo 4
Salus iT500
Honeywell Home T6
Ketotek KTF0163A
Pack thermostat + tête thermostatique Netatmo
Salus iT500
To have remote control of your heating system, simply install the Apple Homekit app and get the Honeywell Home T6 smart thermostat.
Easy to install thanks to its simplified wiring system, the Ketotek KTF0163A is a wired room thermostat designed to control underfloor heating. Ideal for smart buyers.
This Netatmo pack will bring the final touch to a fully connected home. It guarantees a reduced energy consumption and a personalized heating profile.
The biggest advantage of the Salus iT500 connected thermostat is its ability to reduce your heating consumption to the bare minimum. Installation is also simple.
Application compatibility

Android and iOS


iOS, Android or Windows

Wi-Fi and wired
Wireless system
Type compatibility
Boiler (on-off and Openherm)
Gas/water boiler/electric floor heating
Boilers (electric, gas, oil, wood) and heat pumps
Heat pump and boiler
Voice assistants compatible
Apple HomeKit, Google Home, Amazon Alexa and IFTTT
IFTTT, Alexa Echo, Google Home, Tuya
Apple Homekit, Alexa and Google Assistant
Dimensions and weight
10.3 x 2.8 x 10.3 cm
200 g
8.6 x 4 x 8.6 cm
307 g
8.3 x 2.2 x 8.3 cm
400 g
10.16 x 17.53 x 20.83 cm
1 kg

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Report an error, request the addition of a feature to the table, or suggest another product. Thank you for your kindness!

Buying guide - connected thermostat

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How to choose your connected thermostat

The purchase of a connected thermostat is a real financial investment. And even if you have to invest a lot of money in such equipment, you might as well choose it intelligently.

#1 - Compatibility

Most of the current connected thermostats are compatible with Android and iOS operating systems. It is also possible to pair it with a connected speaker integrating a voice assistant likeAmazon Alexa, Google Assistant, Siri or even IFTTT.

#2 - The heating system

It should be noted that not all connected thermostats are necessarily compatible with the various existing heating systems. In general, an electric heater already has its built-in thermostat. Check that the model of your choice is suitable for your type of heating(electric radiator, boiler or heat pump).

#3 - The type of programming

Thanks to this criterion, you will be able to program the right temperature for your home. Some models offer the possibility of setting up a weekly program that you can control remotely through an app.

#4 - The integrated options


new generation of connected thermostat allows you to take advantage of many options already built in, including


  • Learning your daily habits
  • Monitoring of your energy consumption and calculation of your real expenses
  • Weather forecasting
  • Geolocation thanks to a presence detector

#5 - The effectiveness of the application

In addition to choosing the connected thermostat itself, also consider the app that comes with it or is compatible with it. Make sure it is intuitive and easy to use. Don't hesitate to do various tests (available for free on the manufacturer's website) to make sure.

What you need to know about how a connected thermostat works

The connected thermostat is no different from other models. It is easy to install on a radiator, air conditioner, boiler or heat pump. Its biggest feature is that it is connected. Therefore, it is equipped with a terminal ensuring a link to one or more connected devices such as a smartphone.

In addition to connecting to the Internet via WiFi or an Ethernet cable, you will also need proprietary software or a mobile application to use it. The difficulty of installing such equipment can vary depending on the model chosen. Simple for some, it is usually enough to disconnect the old model of thermostat in order to connect the new device.

On the other hand, connected thermostat models with a control center require a more complex installation. In this circumstance, you should seek the services of a professional to install the device on your heating system.

The different types of connected thermostats

As a rule, connected thermostats work in the same way since they use the same operating systems. However, it is possible to differentiate them more easily thanks to their mode of connection to the Internet. Therefore, we distinguish between wired and wireless models.

Connected wired thermostat

The connection of the connected thermostat is done via an RJ45 cable

. Its main role is to connect the smart device to the Internet box. You must have a cable of an appropriate length in proportion to the distance between the two devices. Also, you will definitely need to install other additional devices for concealing the cable.

The thermostat remains very secure while the flow rate is relatively high. If you're a bit of a do-it-yourselfer and installing RJ45 cables is not a problem for you, this model offered at a very good price will certainly suit you.

Wireless connected thermostat

The device is connected directly to the network through Wi-Fi. Since it doesn't require any special installation, you can place your wireless connected thermostat wherever you want. All you need is for the device as well as your smartphone, tablet or PC to be connected to your Internet network. Unlike a wired thermostat, there is no risk of network disruption, especially if you have children or pets.

The wireless connected thermostat is without a doubt the most interesting solution for better remote programming. This is the model you need if you want more freedom during installation and use.

The Bluetooth connected thermostat

Connecting via Bluetooth is a great solution as you won't need Wi-Fi to operate your connected thermostat. However, remote control could be a real drawback since the range of this technology is less.

Connected thermostat or heating programmer?

Connected thermostat

Just like a traditional thermostat, the main role of the connected thermostat is to manage the heating systems of a home. It generally acts on the boiler, the heat pump or the radiator depending on the model chosen. Connected, the device can be controlled remotely using a smartphone, tablet or PC. Wherever you are, your energy consumption can be monitored in real time. Similarly, the device offers to measure your habits and adapt to them in order to create a personalized program.

Heating programmer

The heating programmer differs a little from the connected thermostat since its role is to set up a temperature program according to defined schedules. It acts mainly on boilers and electric radiators. The comfort is optimal and the heating management will be done automatically once the program is established. Thus, thanks to the programmer, you will be able to heat your home only when it is necessary.


In short, the connected thermostat allows you to choose the temperature in proportion to your needs. The heating programmer, on the other hand, is used to set a temperature according to specific schedules. This is a function that the thermostat does not have. However, coupled, these 2 devices are very effective. They will offer you the possibility to make real energy savings and to heat your home when you want.


Estimate the return on investment correctly

According to the manufacturers, the return on investment is estimated at about 12 months. You will benefit from an energy gain of about 20 to 40% depending on the model. However, it depends on your energy consumption, the number of people in your household, the size of your home and your insulation system.

Opt for a multi-zone connected thermostat


very interesting feature, the multi-zone offers you the possibility to manage more efficiently the temperature in your whole house. Controlling the right temperature for each room is done through the app.

Be careful with the installation of your connected thermostat

First, it's important to verify that the connected thermostat is compatible with your current heating unit. Turn off all power before installation. Insert the batteries and then connect the wires (following the color codes) between the two devices. After connecting it to an Internet network (via RJ45 cable or Wifi), use the mobile application to make all the appropriate settings. All the steps to follow are indicated there. Generally, it is necessary to wait up to 24 hours to receive the first information.

Remember the main features of a connected thermostat


connected thermostat offers several features that vary according to the model. Among others, you will appreciate the vacation program, the option to turn on and off the heating, humidity sensors, the "absence" function, self-programming and Autoadapt, weather prediction, open window detection, presence sensor... and many others.

Be careful with the budget


you need the help of a professional, be aware that the price of installing a connected thermostat ranges from €139 to €169. This rate can vary depending on the type of heating you have.


What is the best connected thermostat?

The best connected thermostat depends on your needs and your budget. Read our buying guide to find out which products are the best at the moment.

Is it difficult to install a connected thermostat?

Overall, the connected thermostat is very easy to install. This task has been made easier thanks to its quality design.

Does replacing a standard thermostat entitle you to a tax credit?

Within the framework of the CITE, you will benefit from a financial aid up to 30 % since you will carry out a work of energy saving by opting for the connected thermostat.

What is the main role of a connected thermostat?

A connected thermostat makes it easy to remotely manage your heating units through an app you install on your smartphone, computer or tablet.

Can we trust a cheap connected thermostat?

Yes, you can have confidence. Just be aware that the cheap connected thermostat will not offer you the same capabilities and/or features as the high-end models.


Note: Below are some of the sources we have consulted in writing this article. Links to other sites are not continuously updated. It is therefore possible that a link may not be found. Please use a search engine to find the desired information.
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March 2022 : Translation of this buying guide from our partner

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Our selection
Honeywell Home T6 5
Honeywell Home T6
Ketotek KTF0163A
Ketotek KTF0163A
Pack thermostat + tête thermostatique Netatmo 6
Pack thermostat + tête thermostatique Netatmo
Salus iT500
Salus iT500


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