10 Best Smart Thermostat System Boiler in The UK

Last updated on 17/08/2025

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Drayton by Schneider Electric Multi-Zone Smart Thermostat and 2 Smart Radiator Thermostat Kit - Combination Boilers Only - Heating Control

Why We Love It

Save money on heating bills.
Easy DIY installation process.
Customisable room-by-room control.

Main Highlights

SAVE ON ENERGY BILLS - With full control of your Wiser system from our app, you can monitor your energy use, predict expenditure and set your own budgets. With smart features such as Away Mode and Eco Mode, you have the power to save up to £575 a year.
COMPATABILITY This kit is designed to work with Combi Boilers Only and will allow control of your heating syste only.
ROOM-BY-ROOM HEATING CONTROL - Each kit comes with two radiator thermostats so you can start controlling key rooms independently, then you can continue to expand your system and maximise your comfort by adding one to each radiator as and when you are ready.
DIY SETUP - The Heat HubR can be installed on a standard wallplate in minutes. It really is as simple as unscrewing your old controller and screwing in your new Heat Hub. Check the instructions for full guidelines.
INSIGHTS & HEAT REPORT - - Insights help you to make wiser decisions when it comes to controlling your home heating. The Heat Report lets you see exactly what your system is up to – anytime, anywhere.
CUSTOMISABLE SETUP – Wiser can support up to 16 rooms, 62 Radiator Thermostats and up to 10 Smart plugs, no matter the layout of your home, Wiser can help.
OPEN WINDOW DETECTION – This feature switches the heating off if the thermostat detects a draft from an open window, also helping to save energy wastage and money. It can be switched on or off for each room in the house from the app.
KIT ADD ONS – You can add further radiator thermostats and smart plugs to allow even more control of your heating system. Add radiator thermostats to all rooms to enable complete room by room control.
Included in this kit is 1 x Wiser Room Thermostat, 1 x HubR and 2 x Radiator Thermostats. More thermostats can be added at any time by simply replacing your manual TRVs with Wiser Radiator Thermostats, without having to drain your system. Wiser Plugs may be needed to boost signal in larger houses.

Honeywell Home T6 Wired Smart Thermostat, Black

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Why We Love It

Simple touch-screen interface convenience.
Remote control from anywhere.
Adapts to your routine.

Main Highlights

Smart Scheduling - Customise your heating with a 7-day or 5/2-day schedule, featuring up to 6 daily periods. This Wi-Fi thermostat serves as a smart central heating controller, ensuring optimal comfort and efficiency.
Geofencing Technology - Utilises your smartphone's location to conserve energy while you're away and restore comfort upon your return. This programmable thermostat is ideal for a wide range of boiler systems working with or without wifi.
Intuitive Interface - Featuring a modern, sleek black screen, the large, easy-to-read touchscreen combined with intuitive navigation buttons allows for quick and effortless adjustments to this wall thermostat's settings and temperature control.
Voice Control Ready - Seamlessly integrates with Alexa, Google and Apple ecosystems for convenient management of your thermostat. Features AUTO/MAN/ECO/HOLIDAY modes to suit your lifestyle and enhance energy efficiency.
Extensive Compatibility - Easy to install, this versatile wired thermostat for central heating supports 24-230V on/off OpenTherm appliances, including gas boilers, combi boilers, and heat pumps, ensuring compatibility and efficiency across various systems.

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+

Free Shipping

Why We Love It

Quality you can trust.
Affordable and worth it.
User-friendly and straightforward.

Main Highlights

SAVES ENERGY AND HEATING COSTS: The intelligent wireless Thermostat X Starter Kit from tado, the experts for smart heating, contains the Bridge X and, exclusive for Amazon customers, a stand – the more rooms your control, the more you save
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
FOR YOUR SMART HOME Control the individual temperature in each room with the industry’s leading multizone control, very simply by app or via smart speaker with Amazon Alexa, Google Assistant or Apple Siri
EASY TO USE: The thermostat is operated intuitively via the display
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
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
Important to know: tado X products are not compatible with tado V3+ or older

tado° Smart Thermostat Starter Kit V3+ - Intelligent heating control, works with Amazon Alexa, Apple HomeKit, Google Assistant, IFTTT

Free Shipping

Why We Love It

Control heating anytime, anywhere.
Saves money with intelligence.
Heats instantly with one click.

Main Highlights

Full control over your heating with the tado° app from anywhere, reduce your energy consumption and save money with the intelligent features tado° offers
Heating Boost: heat up all rooms for 30 minutes with one click in the app
Smart Schedules for the perfect temperature individually in each room, at any time; only active when someone’s home; can optionally be turned on and off with one click in the app
If no one is home or an open window has been detected, the tado° app reminds you to turn down the heating via push notification
Further advantages with Auto Assist (optional): If no one is home or open windows have been detected, tado° automatically turns down the heating; Care & Protect helps to solve heating problems (in-app purchase, cancel monthly; £2.99/month)
Compatible with almost every heating system including gas boilers, oil boilers, condensing boilers, OpenTherm systems & hydronic underfloor heating; replaces your conventional wired room thermostat
Further features: Weather Adaptiation, Insightful Statistics, Energy Savings Report, multi room control (additional Smart Thermostats required), heating boost function, frost protection

New Hive Thermostat for Heating Control (Combi boilers and multizone Hubless) Opentherm, White

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Why We Love It

Energy-efficient heating control.
Convenient scheduling options available.
Automatic frost protection offered.

Main Highlights

New OpenTherm feature - OpenTherm tells heating controls and boilers precisely how much heat is needed to reach and maintain the target temperature. Improving efficiency from up to 12% lower gas consumption, extended lifespan of boilers, and more consistent room temperatures. Providing cost savings, added comfort, and a more sustainable home.
Heating and Hot Water schedules – set up to 6 daily time slots
Heating and Hot Water Boost – for up to six hours
Automatic Frost Protection – helps prevent frozen pipes
Geolocation – heating alerts when you leave or return home
Holiday Mode – tell Hive your holiday dates and come back to a warm welcome
Hive Hub is needed for remote or app control of heating

Vibe WiFi + RF Smart Phone App Controlled Room Thermostat Wireless - IOS & Android Apps Available - Also works with Amazon Echo & Google Assistant

4% Off

Why We Love It

Touch-screen for easy control.
Pre-programmed for user convenience.
Compatible with iOS/Android devices.

Main Highlights

The Optimum Vibe – model OP-WFSTAT is a Wi-Fi & radio frequency battery-powered programmable room thermostat with touch-screen controls, providing four timed temperature periods every 24 hours. The transmitter (Tx) has a large blue backlit display and runs a pre-programmed user adjustable temperature profile. Users can just touch the up or down control icon at any time to manually adjust the current temperature setting.
The Wi-Fi & radio frequency receiver (Rx) must be wall-mounted adjacent to the boiler, has auto-recognition open therm connections and volt-free switching; indicator l.e.d. lights showing power and load status and has a button for manual operation if required. The control set uses 2.4GHz Wi-Fi and the license-free 868MHz frequency and is pre-linked in the factory with a unique code.
TEMPERATURE REGULATION MODE: ON/OFF ~ OPTIMISING ~ T.P.I.
WiFi / RADIO FREQUENCY PROGRAMMABLE THERMOSTAT
iOS / ANDROID SMART PHONE APP
EQUIPPED FOR WALL MOUNTING OR TABLE-TOP USE
WALL-MOUNTED RECEIVER
OPEN THERM OUTPUT and VOLT-FREE SWITCHING SUITABLE FOR COMBINATION BOILERS
CLASS VI CONTROL, 4% SYSTEM EFFICIENCY CONTRIBUTION
BACKLIGHT AUTO or OFF.

Bosch Smart Home Room Thermostat II for Wired Heating Systems, 230 V, Compatible with Google Assistant and Alexa

16% OffFree Shipping

Why We Love It

Precise temperature for comfort.
Handy remote monitoring option.
Personalized heating schedules.

Main Highlights

Precise heat regulation: Smart in-wall control unit for wired heating systems or existing underfloor heating systems ensures an optimum feel-good temperature
Keep track of the temperature: Thermostat shows the current room temperature, heating status and relative humidity on an LED matrix display
Convenient control: Adjustment possible on the device using rotary/push knob, fully automatically, via app from a remote location or voice commands with Amazon Alexa and Google Assistant
Flexible time programmes: Temperature control via individual heating plans and adjustable heating breaks allowing a pause in heating as necessary in each room
Maximum added value in the system: you need a Bosch Smart Home controller or Bosch Smart Home controller II to integrate the device into your Bosch Smart Home system
Package contents: 1x Room thermostat II 230 V, 1x in-wall housing 230 V, 1x wire bridge, quick start guide (11 languages)

tado Wired Smart Thermostat - Add-On Thermostat For Multizone Control, Digital Heating Management, Easy Installation, Save Heating Energy And Costs - Replacement Of Existing Wired Thermostats

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Why We Love It

Saves energy and money.
Offers smart central control.
Allows easy DIY installation.

Main Highlights

SAVE ENERGY AND MONEY: Expand your tado starter kit with wired smart thermostats to control your boiler or water-based underfloor heating, designed in Germany and already used by millions across Europe
SMART CENTRAL CONTROL: Individually manage multiple rooms or zones, set Smart Schedules for each room using your smartphone according to your routine, and maximise your home comfort
REQUIREMENTS: Only works with a tado Starter Kit (V2, V3, V3+) that includes the Internet Bridge, which you need only once per home - available separately
COMPATIBILITY: tado works with almost all heating systems of most manufacturers; simply replace existing wired thermostats to control your home’s central heating, ground or air source heat pump, or your hydronic underfloor heating
FOR RENTED PROPERTIES: You can use the smart thermostats even if you live in a rented property - simply reinstall the old equipment when you move out
EASY DIY INSTALLATION: To connect your additional smart thermostats, simply follow the instructions in your tado app; no expert knowledge is needed
FEATURES: Advanced Geofencing, Weather Adaptation, Statistics, Energy Savings Report, Multi-Room Control (additional smart thermostats required), Heating Boost Function

Hive Thermostat Mini for Heating (Combi Boiler) without Hive Hub - Multizone

9% OffFree Shipping

Why We Love It

Saves money annually.
Elegantly designed interface.
Simple temperature adjustments.

Main Highlights

Beautifully Clear – small but perfectly formed, Mini’s elegant mirrored design and clear interface blends in with your home
Easy to Use – change the temperature quickly and simply on the Thermostat itself or use the Hive app to set schedules, boost your heating or hot water or change to Holiday mode
Geolocation - with the Hive app, you’ll get a reminder to turn off the heating if you leave home when the heating is due to come on
Automatic Frost Protection – if the temperature drops below 7°C in your home, Mini can turn on your heating to stop your pipes from freezing
Create and edit heating schedules – set up to six daily time slots to heat your home, seven days a week
Hive Hub is needed for remote or app control of heating

Hive Thermostat for Heating & Hot Water (Conventional Boiler) with Hive Hub - Energy Saving Thermostat

72% Off

Why We Love It

Saves money annually.
Customizable heating schedules.
Frost protection feature.

Main Highlights

Heating and Hot Water schedules – set up to 6 daily time slots
Heating and Hot Water Boost – for up to six hours
Automatic Frost Protection – helps prevent frozen pipes
Geolocation – heating alerts when you leave or return home
Holiday Mode – tell Hive your holiday dates and come back to a warm welcome

8.7

Excellent

Save 72%

We scanned 1738 products

We reviewed these offers relevant to the Smart Thermostat System Boiler within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Drayton by Schneider Electric, Honeywell Home, tado, Hive, 22.5 Team Controls, Bosch, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Smart Thermostat System Boiler in the market, we considered we took a deep dive into 8691 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Drayton by Schneider Electric Multi-Zone Smart Thermostat and 2 Smart Radiator Thermostat Kit - Combination Boilers Only - Heating Control. We love many things about this product by Drayton by Schneider Electric. What sets it apart from the competition is Save money on heating bills, Easy DIY installation process, Customisable room-by-room control.
The best value product for most shoppers and where user satisfaction is continuously the highest is Honeywell Home T6 Wired Smart Thermostat, Black by Honeywell Home based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Smart Thermostat System Boiler and the best cost-to-value ratio is Hive Thermostat for Heating & Hot Water (Conventional Boiler) with Hive Hub - Energy Saving Thermostatat Hive with a 72% discount.
Our list of the best Smart Thermostat System Boiler is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Smart Thermostat System Boiler in The UK

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We scanned 1738 products

We concluded that: