How energy efficient are aluminium windows and doors?

by | Dec 4, 2021 | Homeowner Advice, Resource Centre

If you’re looking at aluminium windows and doors for your home, you’re likely to be wondering how energy efficient they are. It’s an important question to ask. Energy prices are spiralling and we all want to keep our bills as low as we can. We are also keen to make more sustainable choices – research shows that nearly 60% of UK residents want to be more eco-friendly.[1]
The first thing to say is that today’s aluminium windows and doors are very energy efficient – but this hasn’t always been the case.

The history of energy efficient aluminium doors and windows

Aluminium windows and doors are the original double glazing. In the 1970s, aluminium double glazing was the only option. They were a huge leap forward because they were more energy efficient than poorly maintained single glazed timber windows.
However, the window industry is very innovative and energy efficiency rapidly improved with new technology and design. By the 1980s, the original aluminium windows had gained a poor reputation for energy efficiency. Fast forward to today, and modern aluminium windows and doors are very different and they offer exceptional energy efficiency.

How energy efficient are aluminium doors and windows today?

Today’s aluminium windows and doors have a wealth of energy efficiency benefits. Aluminium is naturally very strong as a material. This means the frames can be very slim by design which allows the glass to take centre stage.
Thermal break technology separates the inside of the window frame from the outside, helping to keep heat in and stopping condensation from forming.
When it comes to the glass, modern double glazed units are very thermally efficient. You can increase the energy efficiency by choosing low emissivity glass or units that are filled with argon gas, which both minimise heat loss.

Energy efficient aluminium doors and windows are just the start

As you will have realised by now, aluminium windows and doors are an excellent choice if you want to improve the energy efficiency of your home.
Aluminium windows and doors also offer other big environmental benefits. The first thing is their lifespan. Today’s aluminium windows have a lifespan of 30 or more years, so won’t need replacing very often. It means they are a great investment for your home and for the planet.
What’s more, aluminium is 100% recyclable at the end of its life. It’s also endlessly recyclable. In fact, nearly 75% of the aluminium ever produced is still in use today. It means that when you choose aluminium windows and doors you are choosing a product that is much better for the planet.

Choosing the most energy efficient aluminium doors and windows

All windows and doors come with a Window Energy Rating (WER). The Ratings work in the same way as energy efficiency ratings on electrical appliances. Windows are legally required to have a minimum WER of C. However, you can choose aluminium windows and doors that go far beyond minimum requirements.
Checking the WER of aluminium windows is a great start when you’re looking at energy efficiency. But to make sure you’re making the best choice for your home, it makes sense to go to a specialist in aluminium windows and doors.
Capital Windows has been manufacturing and installing the latest generation, innovative and technologically advanced aluminium windows, doors, bifolding doors and glazed home improvement solutions for over 40 years. We’re based in Uxbridge, in Middlesex, Greater London and our aluminium windows and doors have been installed in thousands of homes across London and South East.
To find out more about choosing energy efficient aluminium windows and doors for your home, contact Capital Windows today.