We have two radiators in the house that do not have temperature controls (ie knob with numbers on it).
One is in the bathroom and the other in the hall.
Combo boiler provides the heating.
The hall unit really is just heating empty space and whilst there is comfort going from one part of the bungalow to another it seems that it would make sense to at least turn it down.
How do I know which of the two sides to turn down/off? They only have decorator's caps on them.