What is the best solution for controlling the heating through thermostatic valves?

[vzorglub (Vincent Regaud)]

I use almost the same set-up as this:

My Central Heating Solution using Thermal Actuators

Hi all, I’m sharing with you here my heating setup in the hopes that it can help someone (and to just show it off, too, I guess. My house is quite typical of UK houses, where I have a boiler, and one or more radiators in each room. The boiler is on/off only, and has a single thermostat, usually located in the worst possible room in the house. You then end up with a single thermostat controlling the temperature of the whole house. I had basic thermostatic valves on each radiator, but the overal…