Should I have to? We have an 8 year old 4 bedroomed house. No room
thermostats but TRVs on all (most?) radiators. IF the central heating
system is properly set-up and balanced, should it be necessary to keep
on playing with the TRVs to compensate for changes in outside
temperature? Only I keep finding I'm having to turn radiators up when
the weather's cold and down again a couple of days later because
suddenly the house is to hot. (The weather is very changeable at the
moment). I though the whole point of having thermostatic control was
that, subject to the boiler being able to provide adequate heat output,
the TRV would cause the radiator to maintain the room at aconstant
temperature. Maybe I'm missing something fundamental but trying to keep
the house comfortably heated in all rooms is causing me far more
trouble than in my previous properties without TRVs. I've scanned many
of the TRV related threads on this newsgroup and noted more than one
contributor referring to having to go round the house to adjust all the
TRVs.
Are my problems consistent with a system that has never been properly
balanced?

Mark