Draught-proof doors Draught-proof doors Help Install double glazing Install double glazing Help Insulate loft Insulate loft Help Insulate hot water pipes Insulate hot water pipes Help Add cavity wall insulation Add cavity wall insulation Help Fit a hot water cylinder jacket Fit a hot water cylinder jacket Help £0 What does this mean? This figure simply shows all the energy saving costs added together to demonstrate the savings you could potentially make. Flick the switches above and see how much you could save4. £0 What does this mean? You’ll have to put some effort in and spend a little more to make the biggest savings but it could be worth it in the long run. This figure shows you how much on average you may spend by carrying out the energy efficiency changes you’ve selected. 0years What does this mean? Efficiencies don’t pay for themselves over night. But in time you could reap the benefits of a more efficient house and start to save money too. This number tells you how long it is likely to take to earn your money back in savings.