One of the biggest ways that energy is lost in the home is through draughty doors and windows. By blocking up gaps to keep the heat in and the cold air out, you can keep your home warm and toasty. A quick and free way to solve this is to create a draught excluder using plastic bags stuffed with newspapers or other spare materials. Otherwise, with the help of a J Cloth, a pair of scissors and self-adhesive foam tape (found at any homeware shop) you can draught-proof your doors for a small cost.
For windows, heavy curtains can make a real difference to how much heat is lost during the winter – and in the summer, blinds can help keep rooms cooler, so you can avoid having to turn on your fan, or even buying one.