As we head into the winter months, many of us will be aware of when we reach for the thermostat and how warm we can afford to make our homes. On 1 October 2025, the energy price cap saw an increase of 2% and experts suggest that while prices will continue to fluctuate, another increase is likely in April next year. Although we can all try to manage our energy use, in an ideal world, we wouldn’t have to. Our home would be warm, without costing the earth. The good news is a lot of us can make home improvements that will better insulate our homes.

According to the government’s English Housing Survey, nearly half of UK homes have now achieved an energy rating of C or better, but that still leaves just over half of homes that need improvements to bring them up to this level. And with the majority of windows installed in UK properties now out of date and therefore not meeting the updated Building Regulations for thermal efficiency, installing new aluminium windows and doors is a terrific opportunity to boost your home’s overall rating.
Are new aluminium windows and doors worth the investment?
As with any investment in your home, it is a question of balancing the benefits with the cost of the project. Having new windows and doors installed, in any material, does require considerable investment but aluminium home improvements particularly come with huge benefits when it comes to energy efficiency and reducing future fuel bills.
High Energy Ratings
Current UK Building Regulations state that all new windows must achieve a British Fenestration Ratings Council (BFRC) Window Energy Rating (WER) label of ‘B’ or above, or an equivalent U-Value of 1.6W/m2K, although this could tighten further as we get closer to the global deadline to achieve Net Zero.
Aluminium windows and doors can already achieve an A++ rating thanks to new and enhanced technologies used in aluminium home improvements. Now containing a thermal break, which is an additional material inside the frame, hidden from view, well manufactured aluminium windows and doors effectively have an inside section and an outside section that prevents heat from travelling from indoors to outdoors. As well as improving energy efficiency, this thermal break also prevents condensation from forming.
Facilitates more glazing for maximum energy efficiency
Aluminium is also known for being a particularly strong building material, which means the frame of the window can be slimmer in design, to allow for more glass. This benefits the thermal efficiency of the window because, generally speaking, the more glass you have in a window, the better its energy efficiency. For anyone who wants to go the extra mile with their new windows and doors, aluminium is also strong enough to cope with the heavier triple-glazed glass units.
Benefits for the long-term
Last but certainly not least, aluminium boasts a lifespan of 30-40 years, which means windows and doors made from the material will remain durable and robust for the long-term. This offers peace of mind to those looking for a long-term investment in their home.
For the more eco-conscious among us, aluminium is also 100% recyclable and can be recycled repeatedly. According to the Aluminium Association, nearly 75% of all aluminium ever produced is still in use today, demonstrating how little waste there is from using the material.
Find your perfect match
If you are considering replacing your windows and doors to improve the thermal efficiency of your home and help manage your fuel bills, aluminium windows and doors have a lot to offer. But it is not just about the material; it is about how well they are manufactured and how well they are installed. Even the very best products will not be effective if installed incorrectly. That is why we have built a carefully selected network of partners to install Reynaers at Home windows and doors, so the quality we embed into the manufacturing process from the very beginning is carried through to the very end of the project. Find your local Reynaers at Home partner today to take your first step towards a warmer home.
Need professional advice on design, specification or installation?
We have a network of carefully selected local installers who will help guide you through your home transformation process.