I was just wondering what the cheapest way to use the central heating is... to keep it on all the time but with the thermastat on low or set it on the timer?? Ive heard so many different things like if you have it on the timer then the boiler is still on all the time but your not getting the heat from it all the time? and if you have the thermastat on low then as soon as the house reaches that temperature it turns it off so basically its still on but your not gettin heat? Im so confused lol its a new house so I dont want to be slapped with huge bills after the winter!!