I'm having trouble understanding how controlling the temperature on radiators can save you money. Surely if you have a radiator on, be it high or low, it doesn't make any difference because the boiler is fired up either way?
I've heard people say it's better to leave radiators on low all day to keep the house at a steady temp. But then the boiler is on all day, eating gas, is that right?
Anyone got any advice on the best way to heat the house?