Draught proofing.

By installing draught proofing you could save around £20 a year on your heating bills and reduce your emissions by 140 kilograms of carbon dioxide each year. If you are undertaking the work yourself, the investment could pay back within 5 years.

Hot water

Insulating your hot water cylinder is one of the simplest and easiest ways to save energy and money. A new, 80mm thick hot water cylinder jacket will save you £20 per year. The jackets themselves cost about half that, meaning that you'll reclaim your initial cost in around 6 months. You will also save up to 150 kilograms of carbon dioxide per year.

Loft insulation

The advice from the Energy Savings Trust (EST) is that ‘Without loft insulation you could be losing as much as 15% of your heating costs through your roof. Insulating your loft is a simple and effective way to reduce your heating bills and you can even do it yourself.’

Lighting

Switch to energy saving light bulbs. They last around 10 times longer than ordinary light bulbs, and each bulb you fit could save up to £60 on electricity over the bulb's lifetime. They come in a whole range of styles. Depending on how long your lights are in use every day, just one energy saving lightbulb could save you up to 26 kilograms of carbon dioxide each year.

Heating

If your boiler is over 15 years old it's probably time to replace it. By law, new gas boilers in England and Wales must now be of the high efficiency condensing type, which can help you save up to a third on your heating bills and even more if you upgrade to modern controls as well. About 60% of your household's CO2 emissions come from your boiler. That's why choosing a condensing boiler is so important. Fitting a new condensing boiler could reduce your home's carbon dioxide emissions by more than 800 kilograms a year.

See link for further details www.energysavingtrust.org.uk/home_improvements.