Length of time to have heating on?

[Bluebell66]

I just wondered if anyone has any thoughts or information on how best to run your heating. Is it better to keep it on low (21C) all the day, or just put it on for a couple of hours as and when you need it, ie morning and evening as I do at the moment. Sometimes the house is so cold, I end up putting it on for longer, or an hour in the middle of the day too. I keep being told by British Gas my bills are higher than the average house my size. However, this could be due to ongoing problems with my boiler (long story, it was installed incorrectly), but I have an engineer coming round on Thursday who is hopefully going to sort the boiler and the radiators out. Hope that makes sense. TIA.

I've had Drayton TRV4s in this house since we first moved in and in my previous house since the 80's
they are great for making sure that bedrooms do not overheat and to allow bathrooms to be kept warmer
also good to manage rooms that are not always in use

I have a combi boiler with pressure gauge on the boiler but I wouldn't be comfortable changing bits on radiators - thanks though

ask around for recommendations of a good local plumber, once winter is over.

I have a reliable plumber who does my gas checks every year and I'm going to ask him to do the thermostat - much to dd2s delight