Best Smart TRVs UK 2026 (Smart Radiator Valves)
Smart thermostatic radiator valves (TRVs) let you heat each room on its own schedule. For most UK homes zoning is the single biggest heating efficiency win you can DIY — typically 15-25% off the gas bill and even more with a heat pump.
Why it matters
A whole-house thermostat heats every room to the same temperature. Smart TRVs mean bedrooms only come on overnight, guest rooms stay cold, and the lounge pre-heats for when you come home — without you lifting a finger.
How we chose
- Works with existing UK radiator valves (M30 x 1.5 standard)
- Battery life (should last 12+ months)
- Pairs with smart thermostats we rate (Tado, Hive, Drayton)
- Open protocol support (Matter, Zigbee, Thread) vs proprietary-only
Our picks
Tado Smart Radiator Thermostat (Pack of 4)
Best all-round — silent, two-year battery, tight integration with Tado thermostat. Auto-Assist subscription adds geofencing if you want it.
Best for: Anyone already running a Tado thermostat.
Check latest price on Amazon UKDrayton Wiser Smart Radiator Thermostat
Industry-standard UK valve body fits virtually any radiator. Works without a hub if paired with the Wiser Kit 2.
Best for: Larger Wiser Kit 2 setups in Victorian homes.
Check latest price on Amazon UKHive Radiator Valve (Twin Pack)
Cheapest way to zone a Hive household. Battery life slightly shorter than Tado, but good enough.
Best for: Hive households adding zoning.
Check latest price on Amazon UKShelly TRV
Protocol-open (WiFi + REST API) — works with Home Assistant, Homey, and anything else. Best for DIYers who want to stay off vendor lock-in.
Best for: Tech-savvy users running Home Assistant.
Check latest price on Amazon UKOur verdict
Tado if you have Tado everywhere. Drayton Wiser for large homes. Shelly if you value platform independence. Skip single-valve installs — zoning only pays off with 3+ radiators.