TRV's on all radiators with combi?

keystone

ValHaller wrote: »

If the hall has an undersized rad, that is ideal for a thermostat - your heating will not go off because it is boiling in the hall when it is chilly in the rest of the house - but it will ensure that the heating will go off for a while in early autumn and late spring.

With the thermostat in the lounge, then ideally no TRV's on either radiator, although if the lounge is longer and thinner then it does start to behave like 2 separate rooms and it is less of an issue to have a tRV on the rad away from the thermostat.

Some people like to have the thermostat in the main living room rather than an incidental space like a hall, but my preference is TRVs in the main rooms because TRVs act like a volume control rather than a switch. But it does depend on only adjusting them a tiny amount at any one time. If someone gets too hot or too cold and whacks the TRV to one end stop or the other, you might as well not bother - adjusting them by half a numbered division is a big adjustment.

Exactly but expecting some people to be able to apply simple common sense like this can be an overoptimistic approach. Thats a generalisation by the way - not suggesting OP thinks like this.

Cheers