Heating gone on this evening! Can any tell me if it is cheaper to have CH on constant but low, or on timed to come on twice (am and pm) with thermostat at 20oC? Heard it takes alot of energy to get house at required temp when on timed where as it doesn't if it is on low and clicking in all the time when it hits say 15oC!! Hope this makes sense! By the way had loft and walls done in the summer with help of goverment grant, hopefully will make some difference!! (Heating and hot water run on oil)