Table of contents
Great British Insulation Scheme update: The Great British Insulation Scheme closed on 31 March 2026. For insulation funding, check the Warm Homes Plan via your local council, or ECO4 (until 31 December 2026) via an obligated supplier.
Energy Company Obligation (ECO4) update: ECO4 is scheduled to end on 31 December 2026. If you may be eligible, start the referral now — applications received close to the deadline may not complete in time.
Introduction to Smart Radiator Valves
Smart radiator valves (also known as smart TRVs) are devices that replace the manual thermostatic radiator valves on your radiators, giving you precise, room-by-room control of your heating. They connect to your smartphone or smart home system, allowing you to set individual temperatures for each room and adjust them remotely. By heating only the rooms you are using, smart TRVs can reduce energy bills by up to 25%, according to the Energy Saving Trust. For a complete overview of smart heating technologies, see our smart heating guide.
Benefits of Smart Radiator Valves
Energy Efficiency
Smart radiator valves optimise heating by allowing precise control over each radiator's output. Rather than heating your entire home to the same temperature, you can lower heating in unused rooms and focus warmth where it is needed. According to the Energy Saving Trust, smart heating solutions like TRVs can reduce energy bills by up to 25%.
Cost Savings
By tailoring your heating to your specific needs, smart radiator valves can lead to considerable savings on your energy bills. Estimates suggest potential annual savings of up to £300, particularly when paired with a smart thermostat and an energy-efficient heating system. The payback period is typically two to three years. For more on reducing heating costs, check out our article on reducing heating bills in winter.
Convenience and Control
These valves are very convenient, letting you adjust settings from your smartphone even when you are not home. They work well with smart home systems like Amazon Alexa and Google Home, allowing voice control and full management of your heating.
Smart Features
Key energy-saving features include:
- Geofencing: Adjusts heating based on your location, turning radiators down when you leave and warming rooms before you return.
- Adaptive Learning: Tailors heating schedules to your habits over time.
- Open Window Detection: Automatically pauses heating when a window is opened to prevent energy waste.
- Scheduling: Set different temperatures for different times of day in each room.
Top Smart Radiator Valves in the UK for 2026
1. Tado Smart Radiator Thermostat
Tado (opens in new tab) offers intuitive controls and excellent energy-saving features. It works smoothly with the Tado smart thermostat for whole-home control and supports geofencing, open window detection, and weather adaptation.
- Price: £50--£100 per valve as of 2026
- Compatibility: Works with most UK central heating systems
- User Reviews: Highly praised on Trustpilot for ease of use and energy-saving capabilities
- Best For: Households wanting the most advanced energy-saving features
2. Honeywell Home Evohome
Known for its advanced scheduling and zone control capabilities, the Evohome system (opens in new tab) allows detailed programming of up to 12 heating zones. It is a reliable solution for managing home heating efficiently in larger properties.
- Price: £70--£120 per valve as of 2026
- Compatibility: Works with a wide range of radiator types and central heating systems
- Best For: Larger homes needing multiple zones and detailed scheduling
3. Netatmo Smart Radiator Valves
Netatmo's (opens in new tab) offering stands out for its sleek design and user-friendly app. It provides excellent energy-saving capabilities and is one of the easiest TRVs to install, making it a favourite among UK homeowners.
- Price: £60--£110 per valve as of 2026
- Compatibility: Works with most standard radiator valves
- Best For: Design-conscious homeowners who want a simple setup
4. Hive Radiator Valve
Hive's TRV (opens in new tab) integrates with the wider Hive smart home ecosystem. If you already use a Hive thermostat or other Hive devices, this is the natural choice for adding room-by-room control.
- Price: £55--£90 per valve as of 2026
- Compatibility: Requires Hive Hub; works with Hive Active Heating
- Best For: Existing Hive users wanting to extend their system
How to Install Smart Radiator Valves
Preparation
Before installation, ensure you have the necessary tools: a wrench, a screwdriver, and a cloth or small container to catch any water. Check that your radiator valve connection is compatible with the smart valve unit you are installing -- most use a standard M30 x 1.5mm thread, but some older UK radiators may need an adapter.
Step-by-Step Installation
- Turn Off the Heating: Ensure your heating system is turned off and radiators are cool before starting.
- Remove the Existing Valve Head: Use a wrench to unscrew the current TRV head from the radiator valve body. You are only replacing the head, not the valve body itself.
- Attach the Smart Valve: Screw the smart TRV onto the valve body. Most simply hand-tighten into place.
- Pair with the App: Follow the manufacturer's instructions to pair the valve with your smartphone app and configure your heating zones.
Troubleshooting Tips
If you encounter connectivity problems, ensure your Wi-Fi signal is strong near the radiator and that the app is updated. Some systems (Tado, Honeywell) use a bridge or hub that should be positioned centrally in your home. If a valve is unresponsive, check the batteries, as most smart TRVs use AA batteries that last 1--2 years.
Maximising Savings with Smart Radiator Valves
Pair with a Smart Thermostat
Using smart TRVs alongside a smart thermostat delivers the best results. The thermostat controls your boiler while the TRVs manage individual rooms, preventing the boiler from firing when no rooms are calling for heat. See our guide to the best smart thermostats for 2026 for compatible options.
Optimise Your Settings
Set schedules and temperature zones according to your daily routine. Lower temperatures in bedrooms during the day and in living areas overnight. A reduction of just 1 degree C can save around 4% on heating costs.
Regular Maintenance
Keep your smart radiator valves updated with the latest firmware and replace batteries promptly. Occasionally check that the valve head moves freely, as mineral deposits can sometimes cause stiffness in older radiator valves.
Smart TRVs vs Smart Thermostats
Smart TRVs and smart thermostats serve different but complementary roles. A smart thermostat controls your boiler and sets the overall heating schedule, while TRVs control individual radiators for room-by-room precision. For most homes, the ideal setup is both working together. For a detailed comparison, see our guide on smart thermostats vs TRVs.
Government Grants
You may be eligible for grants that cover smart heating controls. The ECO4 scheme and Great British Insulation Scheme can subsidise smart TRVs for qualifying households. Check your eligibility using our grant checker, or read our guide to smart heating grants.
