A round smart thermostat glowing on the wall above a radiator with a smart valve

Smart heating

Best smart thermostats (UK): tado X and Meross for app heating

App-controlled heating for UK homes: tado X starters with Bridge X, or a simpler Meross Wi-Fi thermostat for many combi boilers.

Curated by Updated 5 products compared How we choose

How we chose: we haven’t tested these products ourselves. We compared the manufacturers’ specs and the Amazon UK listings, then picked each one for the job it suits best. More on how we choose

Quick picks

  1. Best full-system start

    1. tado X wired starter

    Best for: Replacing a wired room thermostat

    Check price on Amazon (opens in a new tab, affiliate link)
  2. Best radiator-first start

    2. tado X radiator starter

    Best for: Room-by-room radiator control

    Check price (opens in a new tab, affiliate link)
  3. Best tado° add-on valve

    3. tado° Radiator X

    Best for: Extra tado° X radiator thermostat

    Check price (opens in a new tab, affiliate link)
Show all 5 picks
  1. Best Honeywell wireless kit

    4. Honeywell Home T6R

    Best for: Wireless Wi-Fi thermostat with receiver box

    Check price (opens in a new tab, affiliate link)
  2. Best Hive Mini add-on

    5. Hive Thermostat Mini

    Best for: Compact Hive thermostat for combi boilers

    Check price (opens in a new tab, affiliate link)

Smart thermostats only pay off if they match your boiler and wiring. I’ve kept this list to three Amazon UK options that cover the common paths: a tado X wired room thermostat starter (Bridge X in the box), a tado X radiator starter when you want TRV heads first, and a Meross Wi-Fi thermostat aimed at many UK combi / underfloor setups. tado X is not compatible with older tado V3+. Always check the maker’s compatibility tool for your boiler. (Here’s how we choose products.)

  • Best full-system start: tado X wired starter + Bridge X (#1)

  • Best radiator-first start: tado X radiator starter + Bridge X (#2)

  • Best tado° add-on valve: tado° Radiator X (#6)

  • Best Honeywell wireless kit: Honeywell Home T6R (#?)

  • Best Hive Mini add-on: Hive Thermostat Mini (#?)

Compare all 5 picks

#ProductBest forKey specLink
1 tado° Smart Thermostat X – Wired Starter Kit with Bridge XBest full-system start Replacing a wired room thermostat Wired Thermostat X · Bridge X · Matter/Thread · UK+EU adapters listed Check price (opens in a new tab, affiliate link)
2 tado° Smart Radiator Thermostat X – Starter Kit with Bridge XBest radiator-first start Room-by-room radiator control Radiator Thermostat X · Bridge X · app + voice Check price (opens in a new tab, affiliate link)
3 tado° Smart Radiator Thermostat XBest tado° add-on valve Extra tado° X radiator thermostat tado° X · app + voice Check price (opens in a new tab, affiliate link)
4 Honeywell Home T6R Wireless Smart ThermostatBest Honeywell wireless kit Wireless Wi-Fi thermostat with receiver box T6R · wireless · Alexa / HomeKit Check price (opens in a new tab, affiliate link)
5 Hive Thermostat Mini (Combi / Multizone, hub sold separately)Best Hive Mini add-on Compact Hive thermostat for combi boilers Hive Mini · OpenTherm · hub not included Check price (opens in a new tab, affiliate link)
Best full-system start

1. tado° Smart Thermostat X – Wired Starter Kit with Bridge X

by tado

Who it’s for: Homes replacing a wired wall thermostat on a compatible boiler / heat pump / wet UFH system.

Verdict: Our top pick when you need a wired room thermostat. The kit lists Smart Thermostat X, Bridge X, batteries, mounting kit, wiring labels, and both UK and EU power adapters for the bridge. App + Alexa / Google / Siri. Not compatible with tado V3+. Amazon UK listing showed in stock when we checked.

What we like

  • Bridge X included (Matter/Thread path) (listing)
  • UK power adapter listed in the box contents
  • App schedules, geofencing features via tado services (listing)
  • Amazon UK retail listing in stock when we checked

Worth knowing

  • DIY wiring – hire an electrician if you’re unsure
  • Some advanced automations may need tado’s paid Auto-Assist – check current terms
  • Not for tado V3+ migrations
Key specs
Includes
Thermostat X + Bridge X (listing)
Protocols
Matter / Thread (listing)
Seller seen
Amazon UK listing (in stock)

Source: Amazon UK product listing (seller-provided details), checked 30 October 2026.

Best radiator-first start

2. tado° Smart Radiator Thermostat X – Starter Kit with Bridge X

by tado

Who it’s for: Homes that want smart TRV heads first, with Bridge X in the starter box.

Verdict: Start with radiators. Lists a Smart Radiator Thermostat X plus Bridge X so you can expand room-by-room. Same X-generation rule: not compatible with V3+. In stock on Amazon UK when we checked.

What we like

  • Bridge X included for the X ecosystem (listing)
  • Per-radiator temperature control (listing)
  • Expand with more X radiator heads later

Worth knowing

  • One head in the starter – bigger homes need more valves
  • Needs compatible radiator valves / adapters (check tado’s list)
Key specs
Includes
Radiator Thermostat X + Bridge X (listing)
Seller seen
Amazon UK listing (in stock)

Source: Amazon UK product listing (seller-provided details), checked 30 October 2026.

Best tado° add-on valve

3. tado° Smart Radiator Thermostat X

by tado°

Who it’s for: tado° X starter-kit owners adding rooms.

Verdict: tado° Smart Radiator Thermostat X add-on. Sold by Amazon when we checked. Needs a tado° X system.

What we like

  • tado° X add-on (listing)
  • App and voice control (listing)
  • Sold by Amazon when we checked

Worth knowing

  • Not a starter kit alone
  • Subscription features – check current tado° terms
Key specs
Type
Radiator thermostat X (listing)
Seller seen
Amazon

Source: Amazon UK product listing (seller-provided details), checked 30 October 2026.

Best Honeywell wireless kit

4. Honeywell Home T6R Wireless Smart Thermostat

by Honeywell Home

Who it’s for: Homes wanting a full thermostat kit without Meross EU / Venture Blue Wiser sellers.

Verdict: Honeywell Home T6R wireless smart thermostat with receiver. Amazon-filtered offers available; confirm Sold by Amazon on the day.

What we like

  • Full thermostat + receiver kit (listing)
  • Works with Alexa / HomeKit (listing)
  • Wireless room unit (listing)

Worth knowing

  • Installation still needs boiler wiring care
  • App setup can be fiddly on dual-band Wi-Fi
Key specs
Type
Wireless thermostat kit (listing)
Seller seen
Check Amazon offer

Source: Amazon UK product listing (seller-provided details), checked 30 October 2026.

Best Hive Mini add-on

5. Hive Thermostat Mini (Combi / Multizone, hub sold separately)

by Hive

Who it’s for: Existing Hive Hub homes adding or replacing a Mini thermostat.

Verdict: Hive Thermostat Mini for combi / multizone. Listing states no Hive Hub included. Prefer Amazon-sold offers.

What we like

  • Compact Mini design (listing)
  • OpenTherm compatible (listing)
  • Amazon-filtered stock when searched

Worth knowing

  • Hive Hub required for app schedules (listing)
  • Heating-only on combi – read compatibility notes
Key specs
Hub
Not included (listing)
Seller seen
Check Amazon offer

Source: Amazon UK product listing (seller-provided details), checked 30 October 2026.

Buying guide

Smart heating picks

Product Badge Seller
tado X wired starter (#1) Best full-system start See card
tado X radiator starter (#2) Best radiator-first start See card
Meross Wi-Fi thermostat (#3) Best simpler Wi-Fi combi option See card
Wiser TRV 3-pack (#4) Best multi-room TRV pack See card
Wiser plug extender 2-pack (#5) Best Wiser range helper See card
tado° Radiator X (#6) Best tado° add-on valve See card

Starter kits stay as #1–#3; #4–#6 extend Wiser and tado° X homes.

Which heating kit?

  • New install: use #1–#3 on this page.
  • More Wiser rads: TRV 3-pack (#4).
  • Wiser range issues: plug extender (#5).
  • Extra tado° X valve: (#6).

What we left out and why

  • Boiler swap / Nest installer packages.
  • Unbranded TRVs that will not join Wiser/tado°.
  • Electric panel heaters sold as “thermostats”.

Prices change all the time. We don’t show prices on { site.name } – use the “Check price on Amazon” buttons for the current price.

FAQ

Will this work with my boiler?

Only if the maker says so. Use tado’s or Meross’s compatibility checkers, and get an electrician if the wiring isn’t a like-for-like swap.

tado X or older tado V3+?

These X kits are not compatible with V3+. Don’t mix generations.