Double glazing your windows makes sense. It saves money and energy - two things we're all looking to save in this shaky eco and economic climate.

You can save up to 20% on fuel bills by installing double glazed windows with the highest energy saving rating. The less heat that is lost from your house through the walls, windows and doors the less time you'll need that central heating for those frosty cold winter days. But it's not just the chill they keep out; they're also excellent at deflecting heat from the sun in summer and noise from the outside world.

But when shopping for double glazed windows - how do you know which are the best at keeping in and out the heat? The British Fenestration Ratings Council (BFRC) is the UK's national system for rating Energy Efficient Windows. This is an easy to understand, traffic light style A-E ratings guide (similar to the one used for white goods) to help us home owners make the most eco friendly, cost effective choice when buying double glazed windows.

To save on your heating bills and reduce your carbon footprint look for double glazed windows that are long lasting (10 year minimum guarantee), are corrosion resistant and have good security features. Safestyle and Anglian Home are two companies that make quality double glazed windows and doors in the UK.