Managing, maintaining and making small adjustments can make a big difference to your energy use.
The optimal temperature to set your heating system to is 18 degrees in winter, but you might find this a little cool. As you choose your temperature however, know that every degree different to the outside temperature, uses approximately 10% more energy to operate.
Windows can be responsible for up to 60% of the heat loss from a house, dependent upon the amount of windows and window treatments. If you are renovating, be aware that high thermal mass materials like brick, concrete and stone are more energy efficient than timber and various veneers.