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Glazing

Installing Energy Saving Recommended double glazing can cut heat loss through windows by half. If you can't afford to replace all the windows, why not choose the rooms that cost you the most to heat?

How it works

Double glazing works by trapping air between two panes of glass creating an insulating barrier that reduces heat loss, noise and condensation.

The savings

Energy Saving Recommended double glazing can cut heat lost through windows by half, as well as saving you around £135 a year on your heating bills. It can also save you around 720kg of carbon dioxide (CO₂) a year.

	Annual saving (£/yr)	CO₂ saving per year
Energy Saving Recommended double glazing	Around £135	Around 720kg

How the savings add up

If everyone in the UK who needed double glazing fitted it we'd save around £700 million and the equivalent of around 740,000 households' CO₂ emissions.

Always look for the Energy Saving Recommended logo when choosing your windows

How it is installed

Fitting double glazing is a professional job. Always look for the Energy Saving Recommended logo when choosing your windows - that way you can be sure they are the most energy efficient as the whole window (frame and glass) is assessed on a rating of A-G by the British Fenestration Ratings Council

If you're on a budget, fitting secondary glazing could be the answer. It's less expensive than replacement double glazing and will still save money by cutting heat loss and draughts.

What to do next

If you have other questions why not visit our FAQ section. If you still have other questions why not call your local Energy Saving Trust advice centre on 0800 512 012 for free, impartial advice on saving energy in your home.