Best Smart Radiator Valves UK (2026): Top 5 Picks
Five smart TRVs to heat only the rooms you use, and what hub or system each one needs
Quick answer
- Best overallHive Smart Radiator Valve – 2,200+ reviews, exact room temperatures
- Best starter kitTP-Link Kasa KE100 Smart Radiator Valve Starter Kit – Hub included, about £37
- Best for tado Xtado Smart Radiator Thermostat X – Works with the tado X system and Bridge X
- Best for Home AssistantSONOFF TRVZB Zigbee Smart Radiator Valve – Zigbee, valve opening control, about £22
- Best no-hub optionSwitchBot Smart Radiator Thermostat – Bluetooth app control, no hub to start
The best smart radiator valve UK homes can pick for most setups is the Hive Smart Radiator Valve. It swaps onto most standard radiator valves, lets you set an exact temperature for each room from the Hive app, and had over 2,200 Amazon UK reviews at 4.2 stars when we checked, with more than 1,000 bought in the past month. It was about £55 and needs a Hive hub. If you are starting from scratch on a budget, the TP-Link Kasa KE100 kit includes a hub for about £37.
A smart radiator valve, or smart TRV, replaces the numbered head on a radiator. It lets you heat the rooms you use and keep spare rooms cool, on a schedule. The catch is that most need a hub or a matching smart thermostat, so check which system you are buying into. We compared five Amazon UK picks on hub needs, app features and price. Need a main thermostat too? See our best smart thermostat UK guide. We have not tested these ourselves.
1K+
The Hive Smart Radiator Valve showed more than 1,000 bought in the past month on Amazon UK when we checked
Source: Amazon UK listing badge, checked 10 October 2026
Editor's Choice
Hive Smart Radiator Valve
Our top pick. The most reviewed smart TRV, from a big UK heating brand.
Diagnose your problem
How to Choose a Smart Radiator Valve
Four quick questions to find the right one.
Problem
Already have Hive or tado?
Stay in the same system
Problem
Starting from scratch?
You do not have any smart heating yet
Recommendation
The Kasa KE100 kit includes the hub, so it works out of the box for about £37.
Products
Problem
Use Home Assistant or Zigbee?
You like tinkering with your smart home
Recommendation
The SONOFF TRVZB works over Zigbee with Home Assistant and Zigbee2MQTT. It needs a Zigbee hub.
Products
Problem
Want no hub at all?
Simple app control over Bluetooth
Recommendation
The SwitchBot works over Bluetooth from your phone. Add a SwitchBot hub later for control away from home.
Products
Our Top 5 Picks
Compare all
Hive
Hive Smart Radiator Valve
“Our top pick. The most reviewed smart TRV, from a big UK heating brand.”
Best for
Hive users and anyone planning a Hive system
Skip it if
You use tado or want no hub.
Pros
- +Over 2,200 Amazon UK reviews
- +More than 1,000 bought in the past month
- +Exact temperature per room
- +Simple swap onto the valve
Cons
- −Needs a Hive hub
- −About £55 each
- −4.2 stars
All specifications
| Needs | Hive hub |
| Works with | Hive app, Alexa, Google |
| Connection | Hive hub |
| Price each | About £55 |
TP-Link Kasa
TP-Link Kasa KE100 Smart Radiator Valve Starter Kit
“The best way to start room-by-room heating without another system.”
Best for
First-time buyers with no smart heating
Skip it if
You already have Hive or tado.
Pros
- +Hub included
- +About £37 for the kit
- +Alexa and Google
Cons
- −4.1 stars
- −About 300 reviews for the kit
- −Extra valves sold separately
All specifications
| Needs | Kasa hub (included) |
| Works with | Kasa app, Alexa, Google |
| Connection | Hub |
| Price each | Kit about £37 |
tado
tado Smart Radiator Thermostat X
“The best pick if you have, or plan to get, the tado X smart thermostat.”
Best for
tado X owners
Skip it if
You have an older tado V3+ system or no tado at all.
Pros
- +Works with tado X thermostat
- +More than 300 bought in the past month
- +Alexa, Siri and Google
Cons
- −Needs tado Bridge X
- −Not compatible with older tado V3+
- −About £60 each
All specifications
| Needs | tado Bridge X |
| Works with | tado app, Alexa, Siri, Google |
| Connection | Thread via Bridge X |
| Price each | About £60 |
SONOFF
SONOFF TRVZB Zigbee Smart Radiator Valve
“The best cheap pick for smart home fans with a Zigbee hub.”
Best for
Home Assistant users fitting several radiators
Skip it if
You want a plug-and-play app with no hub setup.
Pros
- +About £22 each
- +Home Assistant support
- +Valve opening control
Cons
- −Needs a Zigbee hub
- −More setup than Hive or Kasa
- −4.1 stars
All specifications
| Needs | Zigbee hub |
| Works with | Home Assistant, eWeLink, Alexa, Google |
| Connection | Zigbee |
| Price each | About £22 |
SwitchBot
SwitchBot Smart Radiator Thermostat
“The best pick if you want to try one smart radiator with no hub.”
Best for
Renters and single rooms, like a home office
Skip it if
You want to control every radiator from work.
Pros
- +No hub needed to start
- +About £27
- +Over 600 reviews
Cons
- −Bluetooth range only without a hub
- −4.2 stars
- −Smaller system than Hive or tado
All specifications
| Needs | None (hub optional) |
| Works with | SwitchBot app |
| Connection | Bluetooth |
| Price each | About £27 |
Compare All Products
Side-by-side specs for quick decision-making
Swipe to compare →
| Product | Needs | Works with | Connection | Price each | Price | Best For | Action |
|---|---|---|---|---|---|---|---|
 Hive Smart Radiator ValveBest Overall | Hive hub | Hive app, Alexa, Google | Hive hub | About £55 | £50 to £60 | Hive users and anyone planning a Hive system | View |
 TP-Link Kasa KE100 Smart Radiator Valve Starter KitBest Starter Kit | Kasa hub (included) | Kasa app, Alexa, Google | Hub | Kit about £37 | £35 to £40 | First-time buyers with no smart heating | View |
 tado Smart Radiator Thermostat XBest for tado X | tado Bridge X | tado app, Alexa, Siri, Google | Thread via Bridge X | About £60 | £55 to £65 | tado X owners | View |
 SONOFF TRVZB Zigbee Smart Radiator ValveBest for Home Assistant | Zigbee hub | Home Assistant, eWeLink, Alexa, Google | Zigbee | About £22 | £20 to £25 | Home Assistant users fitting several radiators | View |
 SwitchBot Smart Radiator ThermostatBest No-Hub Option | None (hub optional) | SwitchBot app | Bluetooth | About £27 | £25 to £28 | Renters and single rooms, like a home office | View |
Fitting Smart Radiator Valves Safely
Smart TRV heads screw onto the existing valve body, so you do not need to drain the system. Check the valve thread (often M30 x 1.5) and use the adapters in the box. Do not fit a TRV to the radiator with the room thermostat, as they can fight each other. If a valve body is stuck or leaking, call a plumber.
Research Methodology
How We Chose These Products
We have not tested these ourselves. This is desk research focused on smart radiator valves sold on Amazon UK.
We read Amazon UK listings and verified UK buyer reviews, and compared maker specs (hub needs, app features, valve fit, battery and price). We checked stock, prices and "bought in past month" badges on Amazon UK with a UK postcode on 10 October 2026. We never make up prices or test results.
Selection Criteria
Setup and Hub
30% weightWhat hub or system it needs and how easy it is to fit
Buyer Reviews
25% weightStar rating, review count and comments on reliability
Smart Features
20% weightSchedules, open window detection and voice control
Value for Money
15% weightPrice compared with features
Availability
10% weightIn stock on Amazon UK when we checked
Important Limitations
- •We have not fitted these ourselves
- •Valve fit depends on your radiator valves
- •Savings depend on how many rooms you leave cooler
- •Prices and ratings change often
Research last conducted: · Price bands checked:
Frequently Asked Questions
Common questions about smart radiator valves in the UK
For most homes we pick the Hive Smart Radiator Valve. It had over 2,200 reviews and more than 1,000 bought in the past month when we checked, for about £55, but needs a Hive hub. Choose the Kasa KE100 kit if you are starting from scratch, the tado X valve for tado X, the SONOFF for Home Assistant, or the SwitchBot for no hub.
They can, by keeping rooms you do not use cooler. The saving depends on how many rooms you turn down and how often. They work best with a smart thermostat controlling the boiler.
Not always, but it helps. Valves alone only open or close radiators. A smart thermostat can also turn the boiler on when one room needs heat. See our best smart thermostat UK guide.
Most fit standard UK valves with an M30 x 1.5 thread, and most come with adapters for common brands like Danfoss. Check the maker compatibility list before you buy.
Most do. Hive needs a Hive hub, tado X needs Bridge X, and SONOFF needs a Zigbee hub. The Kasa kit includes its hub, and SwitchBot works over Bluetooth without one.
Usually yes. You unscrew the old head and screw the new one on. You do not need to drain the system. Call a plumber if the valve is stuck or leaks.
Most use AA batteries and makers often quote about a year or two. Cold rooms and lots of changes can shorten this.
No. The radiator in the room with the main thermostat should usually be left fully open, so the two do not fight each other.
Not easily. Each brand uses its own app and hub. Pick one system and stick to it.
Keep the heat in. See our best thermal curtains UK, best radiator reflector foil UK and best draught excluders UK guides.
Ready to heat only the rooms you use?
Our top pick, the Hive Smart Radiator Valve, had over 2,200 Amazon UK reviews when we checked.
View Our Top Pick on Amazon UKDisclosure & Editorial Policy
Amazon Affiliate: TopMagpie is a participant in the Amazon Services LLC Associates Programme. We earn from qualifying purchases. This doesn't affect our editorial choices or the prices you pay.
No Lab Testing: We have not laboratory-tested these products. Recommendations are based on spec analysis, reviews, and editorial judgement.
Prices: Approximate bands, checked . Amazon prices change frequently – always verify the current price before purchasing. We do not invent live prices.
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