Energy Saving Hub
Smart Heating Controls: The Complete UK Guide (2026)
Heating swallows roughly two thirds of the average UK energy bill, and most of that money goes into rooms nobody is standing in. This hub explains every type of smart heating control, what each one realistically saves, and which kit is worth your money in 2026.
What is smart heating?
Smart heating simply means your boiler is told what to do by something cleverer than a dial on the wall. In place of a fixed timer, a smart thermostat connects to your home Wi-Fi and takes instructions from an app, a voice assistant, or its own learning algorithm — so the heating follows your life rather than a schedule you set once in October and forgot about.
In a typical UK home that means three things. Your phone's location tells the system when the house is empty so the boiler winds down, and fires it back up before you get home. Smart radiator valves let you heat the living room to 20°C while the spare bedroom sits at 15°C, instead of warming the whole house uniformly. And the app shows you exactly how many hours the boiler ran, so waste becomes visible instead of arriving as a surprise in your quarterly statement.
Nothing needs replumbing. Most systems swap out your existing thermostat and screw onto the radiator valves you already have, in an afternoon.
How much can you save?
Figures below assume an average UK household spending around £900 a year on gas heating, and the widely reported 20-30% reduction from well-configured smart controls. Your mileage depends on how carefully you manage heating today.
| Cost area | Before | After smart controls | You keep |
|---|---|---|---|
| Annual gas heating bill | £900 | £675 | −£225 |
| Typical winter month | £150 | £113 | −£37 |
| Heating an empty house | ~£120/yr wasted | £0 | −£120 |
| Unused spare rooms (with TRVs) | £90/yr | £25/yr | −£65 |
Estimates only, based on typical UK usage and the Ofgem price cap. Actual savings vary with insulation, occupancy and tariff.
The 4 types of smart heating products
Most homes end up with two of these. Start with the thermostat, then add whatever fixes your specific problem.
Smart Thermostats
The wall-mounted brain of the system. Learns your routine, uses geofencing to stop heating an empty house, and gives you app control from anywhere.
Read the thermostat guideSmart Radiator Valves (TRVs)
Room-by-room zoning without replumbing. Screw onto existing radiators so you only heat the rooms you're using — usually the single biggest saving.
Jump to the TRV sectionSmart Boiler Controls
OpenTherm modulation and weather compensation let the boiler run cooler for longer instead of blasting on and off, which cuts gas use noticeably.
Read the controls guideHeat Pump Controllers
Heat pumps prefer slow, steady heat. The right controller manages flow temperature and off-peak tariffs so your COP — and your bill — stays sensible.
Read the heating guideOur top picks
Five smart heating systems that work properly with UK boilers, compared on price, best use case and realistic savings.
Nest Learning Thermostat
4.7Google · Best for Learning your routine automatically
£219 · saves Up to 26%
Hive Active Heating
4.5Hive · Best for UK boiler compatibility and easy install
£179 · saves Up to 20%
Tado Smart Thermostat V3+
4.4Tado · Best for Geofencing and multi-room TRVs
£199 · saves Up to 22%
Ecobee Premium
4.6Ecobee · Best for Homes with hot and cold spots
£229 · saves Up to 23%
Honeywell Home T6
4.3Honeywell · Best for Budget-conscious buyers
£149 · saves Up to 18%