I'm starting to see a system advertised called House tech, which consists of motorized TRV's and a room thermostat. Both the TRV 'head' and the stat are battery powered and communicate wirelessly, so the stat part does not have to be physically close to the radiator. I wonder if anyone has any experience of these ? I think the system comes from Germany.
I ask because generally I find that TRV's don't work especially well. I have two teenagers who spend a lot of time using PC & games consoles in their rooms which get very warm, while the rest of the house maybe on the cool side. A smarter TRV system i.e one that works , would seem a good move. They claim that the units connect to a wide range of TRV fittings - you remove the top pice. Not sure if my Drayton 'Lifestyle' is the same as the Danfoss fitting they support.
I have no connection with HouseHeat - it just seemed like it might be a good idea , assuming it works and you don't have to spend your life replacing batteries