"gazz" wrote in message
...

i'm to turn the thermostat down by one degree... havent bloody got one,
well, only the one on the combi boiler which senses water temp i believe.

Well you will save a lot more if you have a proper control system.
Its bad enough that some systems were not fitted with room stats decades
ago, to not have one on a combi system is poor.
Are you sure you don't have one?