Gas Central Heating Savings Help

StarshipUK

I have got Gas Central Heating, and have all the radiators switched on full. I was guessing that leaving them all on would not use more gas or cost more, but I am now wondering if I turn off the unneeded radiators will this use less gas and cost less?

I am end of terrace and have concrete floors downstairs (which I think makes the house colder), although the house walls are insulated with filler stuff and the loft has also been fully insulated (and recently boarded to use for storage of light items).

The other question I have is on my Boiler (A Glow Worm Betacom 30) Both the hot water and central heating knobs are set to full. Would turning these down use less gas or the same amount of gas for the time the boiler is on? If this does use less gas (as a result of producing less heat) would it then actually cost more, as I expect the boiler will probably be on for longer to get the house to the required temperature?

The last question is my bathroom radiator needs to be bled on a regular basis (all other rads in the house seem OK). Is there a cheap or easy way to fix this problem apart from having to keep on bleeding it (the top is cold and only bottom is hot before bleeding).

Badrick

Turning off radiators in unused areas will save you money as the boiler won't have to produce the extra heat for these areas.
If you don't have thermostatic valves fitted on each radiator, it is worth looking into fitting them as they automatically close off each radiator when that room is warm enough.
It's worth experimenting with the temperature settings, as you could probably turn these down slightly and not feel any difference, but as the boiler would be using less gas, there would be some savings to be made.
You could buy an automatic radiator bleed valve known as a HV30C for your bathroom radiator. example HERE