Smart Home Assistant

Thermostats & heating that work with Home Assistant

Smart thermostats and radiator valves that work with Home Assistant, verified against UK heating systems from combi boilers to S-plan zoned setups. UK smart heating is its own world — combi boilers, S-plan zones and TRVs on every radiator — and Home Assistant support varies wildly, from fully local Matter thermostats to cloud integrations that lag by a minute. Every thermostat and radiator valve here is verified against UK heating systems, with honest notes on which integrations are local, which poll a cloud, and what that means for your automations.

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Aqara Radiator Thermostat W600
Native integrationLocal control

Aqara

Aqara Radiator Thermostat W600

3.2 (139 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread supported
  • Matter supported
  • BT not supported
  • not supported

Aqara's 2025 TRV launched specifically for the UK market, and unlike the older E1 it does Thread: flip it to Thread mode and it joins Home Assistant over Matter with no Aqara hub at all. At £49.99 it undercuts the tado X radiator valve while matching the no-hub trick — but that convenience costs you valve position, battery reporting and external-sensor pairing in Home Assistant. Want those back? Add an Aqara hub and run it Zigbee instead. It's a compact ⌀57×90mm cylinder fitting standard M30×1.5 valves (six adapters included), and reviewers confirm the under-30dB motor claim — quieter than most rival TRVs, tado's included, so it won't disturb sleep.

£49.99 at Amazon UK

£49.99 at Aqara UK Shop

Verified September 2026
Shelly BLU TRV
Native integrationLocal control
  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT supported
  • not supported

Reads two temperature sensors and battery over the native Shelly integration via BLU Gateway; that's the extent of it, with no climate entity, setpoint, or calibration until you add the community hass_shelly_blu_trv HACS integration plus a dedicated ESPHome Bluetooth proxy, since a Shelly relay won't substitute. Once that's running, precision is genuinely excellent at 0.1°C steps, and 2-year AA battery life beats SONOFF's TRVZB (about 6 months) and matches Bosch. At £51.99 with gateway included it undercuts Bosch (£59.99), but demands more setup graft than the plug-and-play Aqara or SONOFF options; budget an evening, not just an order.

£51.99 at Shelly Store UK

Verified September 2026
tado° Smart Radiator Thermostat X
Native integrationLocal control

tado°

tado° Smart Radiator Thermostat X

4.2 (813 reviews)

  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread supported
  • Matter supported
  • BT not supported
  • not supported

At £74.99 this is among the priciest TRVs we track — well above a SONOFF TRVZB and the Bosch Radiator Thermostat II — and you're paying for tado's design and near-silent motor, not raw reliability. It joins Home Assistant locally via Matter, through Bridge X or any Thread border router on your fabric. Unlike the AA-powered Bosch and SONOFF, it runs on a removable rechargeable Li-ion pack charged over USB-C roughly once a year — no battery hoarding, but a routine to keep up with. The included six adapters cover 95% of UK valves (M30x1.5mm thread, direct-fit). Buy the Bridge X starter kit first; singles only make sense as add-ons.

£74.99 at Amazon UK

£59.99 at tado° Shop

Verified September 2026
Aqara Floor Heating Thermostat W500
Native integrationLocal control

Aqara

Aqara Floor Heating Thermostat W500

3.9 (57 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread supported
  • Matter supported
  • BT not supported
  • not supported

The rare underfloor-heating pick that speaks Thread/Matter locally, no Aqara hub required — a wired 230V thermostat switching up to 16A electric UFH (or 2-wire NC hydronic actuators) with an included NTC floor probe. This is an electric-UFH specialist, not a radiator thermostat swap: budget an electrician's time, since it wires into Live/Neutral/Load at the backplate rather than clipping onto an existing 2-wire stat. At £69.99 it undercuts the hub-based Heatmiser neoStat Pro (£127.52 plus a ~£117 neoHub) by a wide margin for a single zone, but Heatmiser's screed floor-limit logic and 32-zone hub scale further if you're wiring more than one room.

£69.99 at Amazon UK

£69.98 at Aqara UK Shop

Verified September 2026
tado° Wireless Smart Thermostat X – Starter Kit
Native integrationLocal control
  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread supported
  • Matter supported
  • BT not supported
  • not supported

The kit to buy when your boiler cupboard isn't near where you want the thermostat: only the link between the room unit and the Wireless Receiver X is wireless — the receiver itself still wires into the boiler's relay or OpenTherm terminals, same as the Wired kit's Bridge X. Pick this over Wired if running a cable to your preferred wall position isn't practical, or you're renting and don't want visible wiring; the room unit runs on 3x AAA batteries instead. It's pricier too — £129.99-£159.99 versus the Wired kit's £119.99 — but the receiver doubles as the Thread border router, so no separate Bridge X needed.

tado° Smart Thermostat X – Starter Kit (Wired)
Native integrationLocal control
  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread supported
  • Matter supported
  • BT not supported
  • not supported

The best all-round pick for HA users replacing a boiler stat: the X line pairs into Home Assistant over Matter/Thread for fully local control. This is the Wired kit (£157.54 on Amazon UK, £159.99 direct) — the thermostat runs on 3x AAA batteries but wires into your boiler's existing thermostat connection, works with Relay and OpenTherm boilers, heat pumps, and wet underfloor heating, and is a DIY job in minutes with no electrician needed. If your old wiring isn't near where you want the display, tado's Wireless kit uses a separate receiver at the boiler plus a battery sensor you place anywhere. Both kits need the bundled, mains-powered Bridge X.

£157.54 at Amazon UK

Our reviewVerified September 2026
SONOFF TRVZB Zigbee Thermostatic Radiator Valve
Zigbee2MQTT / ZHALocal control
  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The budget king for Home Assistant TRVs: around £22 a radiator versus £60+ for the Bosch Radiator Thermostat II, with equally solid Zigbee2MQTT/ZHA support and no hub or cloud dependency. The trade-off is build quality and running costs — three AA batteries typically last only around six months (versus roughly two years on the Bosch), and the plastic body and motor feel noticeably cheaper. Fits M30x1.5mm valves directly, with adapters in the box for Danfoss RA/RAV/RAVL, Caleffi, Giacomini and M28. Best suited to whole-house rollouts on a budget rather than the one or two rooms where you want set-and-forget accuracy.

£22.30 at Amazon UK

Verified September 2026
MOES BRT-100 Zigbee Radiator Thermostat
Zigbee2MQTT / ZHALocal control
  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The classic Tuya budget TRV — Amazon UK's price has climbed to around £40, roughly £14 more than the Sonoff TRVZB it competes with, so it's no longer the budget pick it once was. Zigbee2MQTT supports it directly (ignore the listing's 'requires MOES hub' line), with window-open detection and a boost button the Sonoff lacks. But this is unmistakably budget Tuya hardware: the plastic housing and LED display feel cheap next to the TRVZB's build, and the temperature-offset firmware quirk shows it. Two AA batteries are rated for roughly 1.5 years, in line with the class. Buy this for the boost/child-lock features; buy the TRVZB if you just want the most reliable radiator valve for less money.

£39.99 at Amazon UK

Verified September 2026
Aqara Radiator Thermostat E1
Zigbee2MQTT / ZHALocal control

Aqara

Aqara Radiator Thermostat E1

4.0 (934 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

Sits squarely between our two other TRVs on price and finish: around £43, about £17 more than the SONOFF TRVZB but £17 less than the Bosch Radiator Thermostat II. Pairs straight into Zigbee2MQTT or ZHA (model SRTS-A01) with no Aqara hub needed — fully local, no cloud dependency. Two AA batteries are rated around a year under typical use, better than the SONOFF's roughly six months but well short of the Bosch's two years. Fits M30x1.5mm valves directly, with Danfoss RA/RAV/RAVL adapters included. A sensible middle ground if the SONOFF feels too plasticky but the Bosch's price tag feels excessive for what it is.

£42.99 at Amazon UK

Verified September 2026
Danfoss Ally Radiator Thermostat
Zigbee2MQTT / ZHALocal control

Danfoss

Danfoss Ally Radiator Thermostat

4.3 (194 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The trade-grade choice for anyone with legacy Danfoss valve bodies: it fits RA, RAV, RAVL and M30x1.5 threads out of the box, so older UK systems with mismatched radiators don't need creative adapter hunting. At around £49 it splits the difference between the £26 SONOFF TRVZB and the £60 Bosch Radiator Thermostat II — build quality and the two-year AA battery life (versus SONOFF's roughly six months) land closer to Bosch, though Bosch still edges it on precision (±0.5°C) and quieter running. Buy this specifically for Danfoss valve bodies or where the wide adapter range matters; otherwise the SONOFF or Bosch are simpler choices.

£49.29 at Underfloor Heating UK

View at Amazon UK

Verified September 2026
Bosch Smart Home Radiator Thermostat II
Zigbee2MQTT / ZHALocal control

Bosch

Bosch Smart Home Radiator Thermostat II

4.1 (2,049 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

At around £60-£68 it costs roughly double a SONOFF TRVZB, but you are paying for build quality: precise +/-0.5C regulation and a sturdy valve motor. Bosch quotes under 30dB, and it is quieter than most Zigbee TRVs, though still audible in a silent room rather than truly silent — light sleepers may notice it overnight. It pairs directly with Zigbee2MQTT or ZHA (model BTH-RA, via the QR install code), no Bosch controller required. Fitting is straightforward: it threads onto standard M30x1.5mm valves directly, and ships with Danfoss RA, RAV and RAVL adapters for older UK radiators. Best suited to living rooms and hallways where accuracy matters more than absolute silence.

£65.01 at Amazon UK

Verified September 2026
Bosch Smart Home Room Thermostat II 230V
Zigbee2MQTT / ZHALocal control
  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

A mains-powered wall thermostat (model BTH-RM230Z) that pairs straight into Zigbee2MQTT — the built-in relay is exposed as a switch, a tidy wired replacement for an underfloor-heating or electric-heating stat without any Bosch controller. It's an electrician job: needs 230V at the backbox and a 35mm-deep flush-mount box, and the relay only switches up to 3A resistive (690W) or 1A inductive, so check it covers your UFH actuator or heating load before buying. Against the Heatmiser neoStat Pro on this site, it's the cheaper single-zone option with no hub — but Heatmiser's screed floor-limit logic and 32-zone neoHub scale further for whole-house wet UFH.

£79.68 at Amazon UK

Verified September 2026
NodOn TRV-4-1-00
Zigbee2MQTT / ZHALocal control
  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The cheapest fully local Zigbee TRV we've tested — no app, no subscription and no proprietary hub, just a straight pairing to ZHA or Zigbee2MQTT. The trade-off is polish: a plasticky finish and an icon-only display rather than tado or Hive's touchscreens.

View at Amazon UK

Our reviewVerified September 2026
Drayton Wiser Thermostat Kit 1
HACS componentLocal control

Drayton

Drayton Wiser Thermostat Kit 1

4.0 (447 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The UK enthusiast favourite: the HeatHub exposes a local API, and the actively maintained wiserHomeAssistantPlatform HACS integration (v3.4.x) gives cloud-free control of zones, TRVs and hot water. Best-value multi-room ecosystem if you don't mind installing one custom component. Kit 1 is the entry point, not the full system: a one-channel HeatHub plus a single wireless Room Thermostat, OpenTherm module and wall bracket — no radiator TRVs included, so out of the box it's whole-home control, not room-by-room zoning. At roughly £140-£165 it undercuts Hive's Active Heating (from £149) and sits close to tado's V3+ (from £129), but Wiser only pulls ahead on value once you add Radiator Thermostats at ~£45 each to build out zones, and unlike tado there's no ongoing subscription. Best fit: combi-boiler households planning to expand zone-by-zone, not anyone needing multi-room control on day one.

£46.68 at Amazon UK

Our reviewVerified September 2026
Drayton Wiser Smart Radiator Thermostat
HACS componentLocal control

Drayton

Drayton Wiser Smart Radiator Thermostat

4.4 (720 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The obvious add-on once you already run a Wiser HeatHub: around £49 a radiator, quiet, and fully controllable per-room in Home Assistant via the local-API wiser HACS integration. It ships with two adapters covering roughly 90-95% of UK valve bodies — standard M30x1.5mm valves (Drayton, Honeywell, Pegler, Myson, Siemens) plus a Danfoss RA adapter — so most households fit it without buying extra parts, and its two AA batteries last around 12 months. Unlike the Kit 1 bundle, which gets you the HeatHub and one room, this is a zone-by-zone add-on, not a starting point — and it only talks to Wiser hubs, so don't buy it for a Zigbee2MQTT setup.

£49 at Amazon UK

Our reviewVerified September 2026
Meross Smart Thermostat MTS200 (Boiler)
HACS componentLocal control

Meross

Meross Smart Thermostat MTS200 (Boiler)

4.4 (358 reviews)

  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

At around two-thirds the price of the Netatmo Smart Thermostat, and a shade under the Hive Mini, this is the budget pick for combi boilers and hydronic underfloor heating — if you're happy with local Wi-Fi over cloud. The meross_lan HACS integration talks to it over plain HTTP on your own network, so there's no subscription or dependency on Meross's servers. Installation is the catch: it needs mains live/neutral plus a volt-free contact wired into the boiler's controls, ruling out a battery stat's plug-and-play setup and often meaning an electrician for anything beyond a straightforward combi. Electric heating and hot-water-only channels aren't supported — check you have the boiler variant (MTS200BHK).

£76.25 at Amazon UK

Verified September 2026
Heatmiser neoStat Pro
HACS componentLocal control

Heatmiser (IMI)

Heatmiser neoStat Pro

  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

This is a UFH specialist, not a general-purpose room stat — skip it if you're just swapping out a radiator thermostat. Heatmiser's floor probe and screed floor-limit logic is built for wet UFH's slow thermal lag, something neither Hive nor tado properly handle on multi-zone underfloor systems. Budget the neoHub G3 (~£117) once, then ~£127 per additional zone — a 4-zone system lands around £625 before wiring centre and actuators. That's steeper than Hive's per-TRV pricing, but Hive has no floor-limit cutoff and tado's UFH support is patchy outside its own wiring centre. If your install already runs a Heatmiser wiring centre, this is the obvious upgrade path.

£127.52 at Heatmiser Shop

Verified September 2026
Hive Radiator Valve
Cloud integrationCloud required

Hive

Hive Radiator Valve

4.2 (2,284 reviews)

  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

Only worth buying as an add-on to an existing Hive Hub and thermostat setup — not a standalone purchase. At £59 a valve it's more than double the £25.99 SONOFF TRVZB, a Zigbee2MQTT/ZHA-native TRV that runs locally with no cloud dependency. Hive ships M30, M28 and Danfoss RA adapters in the box, covering most UK valve bodies, and runs on 2x AA batteries — Hive doesn't publish an official life figure, but expect roughly a year, better than the SONOFF's ~6 months on three AAs. The catch is everything routes through Hive's cloud rather than local Zigbee, so state and boost commands lag behind a native HA TRV.

£59 at Hive Home

£59.99 at Amazon UK

Verified September 2026
Hive Thermostat Mini
Cloud integrationCloud required
  • Zigbee supported
  • Z-Wave not supported
  • Wi-Fi not supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

The cheapest route into smart heating, and it shows up fine in HA via the built-in Hive integration — though that integration is cloud-polling, so expect slight lag and a dependency on Hive's servers. The £79 kit is the wall-mounted thermostat plus a receiver that wires into your boiler's existing controls; that wiring is why Hive defaults to professional install at checkout, and DIY is only realistic if you're already comfortable inside a boiler's low-voltage terminals. Versus the full-size Hive Thermostat, you lose the physical display and dial — everything runs through the app — for the same core heating control. Single-zone only; multi-room needs the separate Multizone kit.

£79 at Hive Home

Our reviewVerified September 2026
Netatmo Smart Thermostat (NTH01)
Cloud integrationCloud required

Netatmo

Netatmo Smart Thermostat (NTH01)

4.1 (1,686 reviews)

  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

A stylish, subscription-free alternative to Hive/Nest for single-zone UK boilers, replacing the Nest Learning Thermostat which Google no longer sells here. The Philippe Starck-designed display itself runs on batteries, but it talks to a relay module that has to be hard-wired into the boiler's control circuit — a straightforward DIY job for most combi boilers, though system boilers and heat pumps sometimes need an electrician. It only manages one heating zone; for room-by-room control across radiators, look at Drayton Wiser or evohome instead. HA support is via the built-in Netatmo cloud integration — reliable but not local, so treat it as app-plus-dashboard rather than automation backbone.

£95.36 at Amazon UK

Verified September 2026
Honeywell Home evohome Base Pack (ATP921R3100)
Cloud integrationCloud required
  • Zigbee not supported
  • Z-Wave not supported
  • Wi-Fi supported
  • Thread not supported
  • Matter not supported
  • BT not supported
  • not supported

Still the gold standard for true 12-zone UK heating, and the built-in evohome integration is actively maintained. But the £246 Base Pack is just the controller, relay box, stand and power supply — no TRVs included. Each extra zone needs an HR92 wireless radiator head at roughly £84, so a 4-5 zone house easily doubles the kit cost before fitting. It also needs a heating engineer to wire the relay box into the boiler and zone valves, not a weekend DIY job. Skip it for a flat or single-zone terrace; evohome earns its price on larger homes needing genuine per-room scheduling across 8-12 zones.

£246 at Plumbing Superstore

Our reviewVerified September 2026

Frequently asked questions

What's the best smart thermostat for Home Assistant in the UK?

For most UK homes it's the tado° Smart Thermostat X: it joins Home Assistant locally over Matter/Thread, needs no subscription, and handles combi and heat-pump systems. If you want whole-house zoning on a budget, Drayton Wiser's local API (via a HACS integration) is the enthusiast favourite.

Can I control my radiators individually with Home Assistant?

Yes — smart TRVs (thermostatic radiator valves) replace your existing valve heads and give per-radiator scheduling. Zigbee models like the Sonoff TRVZB (~£25) and Bosch Radiator Thermostat II pair straight into Zigbee2MQTT or ZHA with no extra hub, and Home Assistant's Better Thermostat community integration can combine them with a room sensor.

Do smart thermostats work with UK combi boilers?

Almost all of them — they replace or piggyback your existing room stat using standard 230V switched-live or OpenTherm wiring. Check whether the kit includes a wireless receiver (needed if your current stat is wireless) and whether your boiler supports OpenTherm for modulating control, which tado° and Wiser both offer.

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