The best wi-fi room thermostats, compared.
Top pick: tado X wireless starter – First-kit tado X package with Wireless Receiver X, a sensor, and a stand, and 4.4 from 286 reviews, the highest star line in this set. Best value: KETOTEK boiler stat – About £44.99 with 4.1 from 840 reviews, the largest count in the cheaper group, for a volt-free dry contact where mains are already at the wall. Updated October 2026.
A Wi-Fi room thermostat calls a wet heating system and lets you change that call from a phone. Most buyers here have a gas combi, a system boiler and cylinder, or occasionally an oil boiler or heat pump, and they are replacing a dial or a programmer. The listing has to match the boiler interface, include the receiver or bridge on a first kit, and say whether hot water is in scope. Electric floor mats and plug-in heaters are a different product. Heat source, the interface, and the box contents are set out in the [Wi-Fi room thermostat buying guide](/hub/thermostats/wifi-room-thermostat/sub/wifi-room-thermostat-buying-guide).
A Wi-Fi room thermostat calls a wet heating system and lets you change that call from a phone.
26 products checked · 47 hrs invested · +16,300 readers
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Personal buying guide
Question 1 of 2
What are you fitting?
The tado X wireless starter combines a room sensor, stand and Wireless Receiver X, making it the clearest first-install tado package in this set. Its receiver is stated to handle OpenTherm or relay control for gas boilers and heat pumps, while the battery sensor can be placed away from the boiler. The amazon.co.uk line of 4.4 stars from 286 reviews is the highest rating here, though it remains buyer feedback rather than a laboratory score. At about £129.99 it costs substantially more than the £33–£50 app thermostats, and AI Assist adds £3.99 a month or £29.99 a year if you want those paid features. The title says Bridge X and hot-water control, but the components list names the Wireless Receiver X rather than a separate Bridge X; one review also reports no Bridge X in the parcel. A separate review says Alexa controlled heating but not hot water. It is the strongest first-kit proposition when the receiver suits your system, provided you treat the components list, not the title, as the final box check.
Pros
Cons
Best for: A new tado X installation needing a wireless room sensor and a boiler receiver for a confirmed relay or OpenTherm system.
Less suitable: Anyone who specifically requires a separate Bridge X in the parcel, wants all smart features without a fee, or uses tado V3+.
Specifications
Common questions
Is Bridge X in this starter kit?
The title says with Bridge X. The box list names Wireless Receiver X, a sensor, and a stand, and does not name Bridge X. One review says the parcel had no Bridge X.
Can it control hot water?
The title and model name include hot water control. One review says Alexa controls heating only, not hot water.
What do the batteries and the fee look like?
Three AAA batteries are included, and the voltage line says 4.5 V DC. AI Assist is listed at £3.99 a month or £29.99 a year.
This tado X starter, about £156.44, claims relay and OpenTherm control, hot-water programming and a rechargeable room unit rather than disposable cells. The listing says the battery charges by USB-C in about two hours and lasts more than 365 days, which is a manufacturer claim rather than a measured result from this comparison. Its 4.3-star line is based on 684 amazon.co.uk reviews, giving it a broader feedback base than the cheaper tado wireless starter. Matter, Thread and support for Alexa, Apple HomeKit, Google Assistant and SmartThings make it the broadest smart-home proposition in the set. However, the title calls it wired with Bridge X while the box list describes a wireless thermostat, wireless programmer and stand without naming Bridge X. That contradiction matters at this price, particularly for a first installation. AI Assist also costs £3.99 a month or £29.99 a year. Consider it when the hot-water programmer and rechargeable control match your system, but verify the exact kit generation and every included component before paying.
Pros
Cons
Best for: A system needing a tado X hot-water programmer and rechargeable room control after the precise kit contents have been confirmed.
Less suitable: A simple combi-only replacement, a buyer expecting an unambiguous Bridge X bundle, or an existing tado V3+ system.
Specifications
Common questions
Is this the wired kit with Bridge X?
The title says a wired starter with Bridge X. The item type says wireless, and the box list names a wireless thermostat, a wireless programmer, and a stand, not Bridge X.
How is it powered?
The listing claims a USB-C rechargeable cell that charges in about two hours and lasts over 365 days. The power attribute also says corded electric.
Is AI Assist included in the price?
The listing prices AI Assist at £3.99 a month or £29.99 a year, and says you can cancel.
The wired tado X is an add-on for extending a compatible system, not a complete first-install kit. It supports OpenTherm and relay control and can also cover a heat pump or water-fed underfloor heating where a wired thermostat already exists. Thread and Matter provide the radio platform, while Alexa, Google Assistant and Siri are listed for voice control. The decisive catch is that Bridge X is not included in the £79.99 price, so you need a Bridge X or another suitable Thread border router before it can operate as intended. It also cannot join a tado V3+ or older system, despite sharing the tado name. Six AAA batteries are supplied, but that does not solve the missing network component. With 4.2 stars from 212 amazon.co.uk reviews, it makes sense as a deliberate add-on, while first-time tado buyers should choose a starter configuration instead.
Pros
Cons
Best for: Adding a wired zone to an existing tado X or compatible Thread setup where the heating interface has already been checked.
Less suitable: A first tado installation, a V3+ household, or anyone without a Bridge X or compatible Thread border router.
Specifications
Common questions
Does this tado add-on include Bridge X?
No. The listing says Bridge X or another Thread border router is required and is not included.
Can it control underfloor heating?
The bullet covers water-fed underfloor heating that already has a wired thermostat, plus gas boilers and heat pumps on OpenTherm or relay.
Will it join an older tado system?
The listing says tado X products are not compatible with tado V3+ or older.
The Vibe separates the battery room thermostat from a receiver beside the boiler, avoiding the need for mains power at the room position. Its description names both OpenTherm and volt-free switching for combination boilers, so it covers more than a basic relay-only pitch when the boiler supports the matching interface. Four timed periods per day are less flexible than the six-period schedules on some cheaper wall stats, but the transmitter can sit on a table or mount on a wall. The £49.95 price includes two AAA batteries according to the listing. The main uncertainty is the box description: the product copy describes a receiver, while the included-components line names only a wall-mount bracket. Voice support is similarly inconsistent, with Echo and Google Assistant in the title but hand control in an attribute. Its 4.2 stars come from only 38 amazon.co.uk reviews, so confirm the receiver contents with the seller before ordering.
Pros
Cons
Best for: A combi-boiler first install needing a movable room sensor, provided the seller confirms that the receiver is supplied.
Less suitable: Buyers who need an unambiguous box list, more than four daily periods, or proven compatibility without checking boiler terminals.
Specifications
Common questions
Is the Vibe receiver in the box?
The description includes a wall-mounted Wi-Fi and radio receiver next to the boiler. The included-components line lists only a wall-mount bracket.
Will it suit a combi boiler?
OpenTherm output and volt-free switching are stated as suitable for combination boilers. Modes named are on/off, optimising, and T.P.I.
Does it work with Alexa?
The title names Amazon Echo and Google Assistant. The controller-type attribute says hand control only.
The KETOTEK provides dry-contact boiler switching, app control and flexible weekly scheduling in a flush-mounted mains thermostat. At about £44.99, it sits in the cheaper group yet has the strongest review base there: 4.1 stars from 840 amazon.co.uk reviews. Smart Life or Tuya, programme, manual and holiday modes, and Alexa and Google Assistant cover the everyday controls most buyers expect. The crucial limitation is wiring rather than software, because the title states 220 V power while the boiler output is described as volt-free. One reviewer found it would not directly replace a two-wire live-and-return Honeywell, and another added a relay for a switched-live boiler. It may also need a suitable back box and competent mains work at the wall. This is the best-supported value option in the set when you already have the right supply and dry-contact boiler terminals, but it is not a universal two-wire replacement.
Pros
Cons
Best for: A mains-powered wall position with a compatible dry-contact boiler input and space for a flush-mounted thermostat.
Less suitable: A two-wire live-and-return Honeywell replacement, or a home where no mains supply is available at the thermostat.
Specifications
Common questions
Does the KETOTEK use a dry contact?
The listing says dry contacts with no voltage to start and stop a boiler that supports that control. The title also says 3 A and 220 V.
Will it replace a 2-wire Honeywell?
One review says it will not replace a 2-wire live-and-return Honeywell. Another buyer added a relay because the boiler was switched by a live.
Which app does it use?
Smart Life or Tuya. Alexa and Google Assistant are claimed. Reviews also mention 2.4 GHz only.
The BEOK offers app-based on/off control for a combi boiler without requiring mains power at the room unit. It is sold as a two-wire thermostat and runs on three AA batteries, which are not included in the £42.99 price. Tuya or Smart Life provides the phone connection, with 2.4 GHz Wi-Fi stated and Alexa and Google Assistant support claimed. The schedule allows up to six temperatures a day, although one reviewer says every day must be entered separately rather than applying one weekly pattern. Battery behaviour is the main reservation: reviews mention cells lasting only weeks and heating remaining on when the batteries failed. Its 4.0-star line comes from 90 amazon.co.uk reviews, enough to make that repeated fault worth taking seriously. Choose it only after confirming that its two-wire on/off arrangement matches your boiler and that you are comfortable monitoring batteries.
Pros
Cons
Best for: A confirmed two-wire combi-boiler setup where a battery-powered wall stat and Tuya or Smart Life control suit the household.
Less suitable: Homes where fail-safe behaviour during flat batteries is essential, or where the boiler requires a mains switched-live control.
Specifications
Common questions
Is the BEOK a 2-wire combi thermostat?
The title says a 2-wire thermostat for a combi boiler, switching the boiler on and off by the temperature setting.
Are batteries included?
Three AA batteries are required and are not included. A USB-C cable, a manual, and two screws are in the box.
Can you set a weekly pattern?
The bullet says up to six temperatures a day. One review says each day has to be set separately, with no single weekly pattern.
The MincoHome gives you six daily heating periods and phone control for a modest £32.99, but it is a mains wall thermostat rather than a simple battery replacement. Its listing specifies a 95–240 V AC supply, and one reviewer needed live, neutral and two boiler wires as well as a deep back box. That makes the existing cable and wall depth more important than the low shelf price. The supplied 3 m probe can be misleading because the listing says it is only for 16 A electric heating, not the gas-boiler application in the title. Alexa is stated, while Google Home appears in a listing bullet, so voice-platform wording is less consistent than it should be. With only 28 amazon.co.uk reviews and a 4.0-star line, there is less buyer evidence here than for the KETOTEK. It is a plausible budget choice when the wiring already matches, but not a safe blind swap for a two-wire dial.
Pros
Cons
Best for: A budget mains replacement where live, neutral, boiler-control wiring and a deep enough back box are already available.
Less suitable: A direct replacement for a two-wire battery or live-and-return thermostat, or anyone expecting the included probe to control a gas boiler.
Specifications
Common questions
Is the MincoHome a touchscreen?
The display type says touchscreen. One review says control is five buttons under the screen.
What wiring does it expect?
The supply bullet is 95–240 V AC. One review needed live, neutral, and two wires to the boiler, plus a deep back box.
Is the sensor probe for a gas boiler?
The package bullet says the 3 m probe is only for 16 A electric heating. The title says gas boiler.
Shelf prices, stars, and review counts are the amazon.co.uk figures stored for these seven listings. They are not a live reload on 17 October 2026. The number on each card is the stored 0–100 figure for this set, which here is the star line times 20. It is not a laboratory test and not a measured gas saving. Listing limits and review faults stay in the written assessment. The weights below follow the buying checks in the digest for this set.
Heating type
20%Combi, system or regular boiler with a cylinder, heat pump, or water-fed underfloor. Electric floor mats and plug-in heaters are a different product. A combi usually does not need a stored-hot-water channel. A cylinder system does.
Boiler interface
25%Dry contact or switched live is on/off. OpenTherm only helps if the boiler supports it. tado’s UK page says tado X does relay or OpenTherm and does not work with tado V3+.
What is in the box
20%A first install needs the receiver or the bridge. The tado wired add-on states that Bridge X is not included. A wireless room unit still leaves the boiler end wired.
Power and wiring
20%Mains-powered, battery dry-contact, or a wireless sensor plus a powered receiver. Count the existing wires before you order. Mains on volt-free combi terminals can damage the board.
App, radio, and reviews
15%Smart Life, Tuya, or the maker’s app. Many cheaper units are 2.4 GHz only. tado prices AI Assist at £3.99 a month or £29.99 a year on the starter listings. Repeated faults outweigh a single praise line.
Start with the heating type, then the boiler interface, then whether the receiver or bridge is in the box. A star rating does not tell you those three. The seven listings below are amazon.co.uk pages, with the prices and review counts stored for this comparison, not a live reload on 17 October 2026. A wireless room sensor still leaves the boiler end wired. An app timer is not, by itself, the extra Boiler Plus measure on a combi in England.
A Wi-Fi room thermostat in the UK is a control that calls a wet heating system and lets you change that call from a phone. Buyers are mostly households with a gas combi, a system boiler and a cylinder, or occasionally an oil boiler or a heat pump, replacing a dial or a programmer. Quality is not the star rating alone. The listing has to match the boiler interface, include the receiver or bridge if it is a first kit, and say whether hot water is in scope.
A humidity monitor, a thermometer, and a 16 A electric floor thermostat do not call a gas boiler. The MincoHome title says gas boiler, but the included 3 m probe is only for 16 A electric heating. Read the heating job on the ASIN you are buying.
The tado X wired add-on, about £79.99, states that Bridge X is not included. tado X does not work with tado V3+. A first install needs a starter that lists the receiver or the bridge. The wireless tado X starter lists Wireless Receiver X. The other tado X starter’s title says Bridge X, while its box list does not name it.
The BEOK is sold as a two-wire combi stat on three AA cells, which are not in the box. Reviews describe cells lasting weeks and, in one case, heating stuck on when the cells died. OpenTherm is not implied by a modern screen. Match dry contact or switched live before you order.
Decide the heat source before the brand. A combi, a system boiler with a cylinder, a heat pump, and water-fed underfloor are different jobs. Electric floor mats are not in this set. Dry contact or switched live is on/off. OpenTherm only helps if the boiler supports it. tado’s UK page says tado X does relay or OpenTherm and does not work with tado V3+. A first install needs the receiver or the bridge. The wired add-on leaves Bridge X out.
Count the wires before you order. Mains wall stats such as the MincoHome and the KETOTEK need a supply at the wall. The KETOTEK title says 220 V on a UK listing, and the output is described as a volt-free dry contact. The BEOK is a battery room unit on 2.4 GHz Wi-Fi. A 5 GHz-only network during pairing is a common miss on that class of stat. tado X uses Thread and Matter. Smart Life, Tuya, or the maker’s app holds the schedule.
Three typical situations, each with a recommendation from this comparison.
You want phone schedules on a simple on/off call, and the wall already has mains. The KETOTEK boiler stat is the best value at about £44.99, with 4.1 from 840 reviews, when the boiler accepts a volt-free dry contact. It is not a two-wire live-and-return swap.
You need a starter with the receiver, not the add-on that leaves Bridge X out. The tado X wireless starter is about £129.99, with 4.4 from 286 reviews, and lists Wireless Receiver X, a sensor, and a stand. Check the components list against the Bridge X wording in the title.
You already have a Bridge X or another Thread border router, and you know the protocol. The wired tado X add-on is about £79.99, with 4.2 from 212 reviews. It does not work with tado V3+. Ignore it if that border router is not already in the house.
The top pick is the tado X wireless starter, at about £129.99, for a first tado X install that needs a room sensor and a boiler receiver in one box. It has 4.4 from 286 reviews, the highest star line in this set, and the receiver is stated for OpenTherm or relay. The title says Bridge X, but the components list names Wireless Receiver X. The best value is the KETOTEK boiler stat, at about £44.99, with 4.1 from 840 reviews, when the boiler accepts a volt-free dry contact and the wall already has mains. It will not replace every two-wire thermostat. The wired tado X add-on leaves Bridge X out, and a battery stat that leaves heating on when the cells die is a different risk. The card score is the stored star conversion, not a laboratory test.
tado X wireless starter
First-kit tado X package with Wireless Receiver X, a sensor, and a stand, and 4.4 from 286 reviews, the highest star line in this set.
KETOTEK boiler stat
About £44.99 with 4.1 from 840 reviews, the largest count in the cheaper group, for a volt-free dry contact where mains are already at the wall.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources for Part L in England, Boiler Plus, and Gas Safe. Listings are the amazon.co.uk captures for these seven ASINs, not a live reload on 17 October 2026. Prices on amazon.co.uk move.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars, and review counts come from those listings. We did not run a laboratory test. The scores rank a listing inside this set only.
