Hi All (again), Last winter we were tortured with constantly adjusting the two thermostats we have for central heating. One is for upstairs and the the other for downstairs. Trouble was that (as expected i suppose) with the doors shut some rooms were either too hot or too cold compared with were the thermostats are. My father in law said i should get individual valve thermostats for each radiator but i cant figure out in my head how that would work with the room thermostats because they ultimately control whether or not the central heating comes on. Say i install the thermostat valves and set each room radiator to 22 degrees, what do i set the room thermostats to? If i set those to 22 as well then there's every chance that it'll knock off the heating when it detects 22 meaning the radiator valves wont be able to much. If i set the room thermostats to something really high to avoid that...like 30 degrees then even though the room radiators will be shutoff at 22 degrees the heating will still be burning away to try and maintain the 30 degree setting for the room thermostats. The other reaon I'm asking is because i was thinking of replacing the analog room thermostats with digital (for quicker responses to temperatures) but i dont want to spend the money if installing radiator thermostats would mean i dont need to. I guess i dont understand how the system is supposed work. Any comments? Thanks in advance.