Central Heating

[sweety36]

Does it cost any more money to have all radiators switched on as to just have 1 on?

[Doc.Spock.1]

Maybe slightly, the hot water is being pumped round anyway.

It is not purely mathematical as electric storage heaters would be.

[Teddio]

Assuming you have gas central heating it will cost much less if you have only one radiator switched on.

[buildersmate]

Dr. S. The water may be being pumped around, but if only one rad is on, then most of the heat stays in the circuit - not radiated out into the room - in turn cooling the water in the circuit - in turn driving the boiler on to reheat the water.
To me it is blindingly obvious that having just one rad on is going to cost a lot less - then again, the house will be cold except in that one room.

[tezestwing]

Sorry to use your post sweety36It seems a big can o worms to me we have just had a new state of the art gas boiler Mrs Tez is lovely and warm in the living room with the room stat going on and off but me in another room on computer with TRV controlled radiator it is hot then cold with the boiler cycle.
My mum has just had her council flat up dated with a new boiler also, but they have put the room stat in the hall so as long as Mum leaves the doors open to circulate the extra warm air away she can have the TRV on the rad on high if needed in the living room.
I would like to know the best place to put the room stat to comply with the regs of course when we had the finely balanced system before all I did was to turn the room valve up a bit to get a bit more heat from that rad and down when I left hth Tez oh I forgot I concur with buildersmate.

[cluemein]

If the radiator is in the room the thermostat is in then possibly it could save a little bit, the problem is that unless you do not move out of this room open any doors or do anything else to let the heat out of the room then it could work. Possibly the best thing to do is to have the rest of the radiators producing back ground heat for the rest of the house. Another thing I have found to help keep my bills down is to not raise and lower the thermostat, and I know that sounds backwords but I found that if the house comes up to temperature then there is much less cycling of the boiler once it is there. Now my house in fairly new and well insulated so not sure if this would work in all situations.

[Lil O'lady]

I leave my heating on with all rads switched on, all the time (if outside temps rise above a certtain point it knocks itself off) - but the radiator temp is cranked right down, about 54 degrees or less. It means everywhere in the house is gently warm and the house builds up a kind of background heat level, without it being freezing cold at dead of night or too hot in the evening. It seems to work OK cost-wise.