What you'll need Thermostatic radiator valve - like this Kartell TRV Thermostatic Radiator Valve + Lockshield from Amazon. Radiator bleed key - like this Rothenberger Radiator Key, Pack of 2 from B&Q.

He said: "Thermostatic Radiator Valves allow you to have complete control over the temperature of individual radiators, and by installing TRVs, you can save money on your heating bills.

So the TRV actually detects the temperature of a room and then controls how much hot water flows into the radiator. It can tell if a room is cold and will therefore allow more hot water to flow ...

Best for: Larger homes To get you started, Wiser – which makes the Drayton range of smart radiator valves – recommends you get its Multizone Kit 1. This comes with everything you need to set up with ...