How energy efficient is my home?
With rising energy costs and growing awareness around sustainability, more homeowners are looking for ways to make their properties warmer, more comfortable, and cheaper to run.
If you have ever wondered how to improve energy efficiency rating, the answer often comes down to how effectively your property can retain heat. Factors such as insulation, windows, doors, heating systems, and ventilation all play an important role in your home's overall energy performance.
Improving your home's energy efficiency rating does not always mean making major structural changes. Small upgrades, when carefully chosen, can help reduce heat loss, improve comfort, and make your home more efficient throughout the year.
One area often overlooked is your external doors and glazing. Older doors can allow heat to escape, creating colder rooms and increasing the demand on your heating system. Replacing them with modern, thermally efficient aluminium bifold doors can be an effective way to improve your home's performance while also creating a brighter, more connected living space.
What affects your home's energy efficiency rating?
Your home's energy efficiency rating is influenced by several key areas:
1. Insulation and heat retention
A well-insulated home keeps warmth inside during colder months and prevents excessive heat entering during summer. Loft insulation, wall insulation, and floor insulation can all make a significant difference to reducing heat loss.
However, even a well-insulated property can lose heat through inefficient windows and doors.
2. Windows and doors
Windows and doors are one of the biggest areas where heat can escape from your home. Older glazing systems, poorly sealed frames, or outdated materials can create cold spots and increase energy usage.
Modern doors are designed with thermal performance in mind, helping to maintain a consistent indoor temperature while reducing unnecessary heat loss.
3. Heating efficiency
An efficient boiler or heating system is important, but improving the way your home retains heat means your heating system does not need to work as hard.
Combining efficient heating with better insulation and high-performance glazing can help create a more comfortable and economical home.
What is a U-value and why does it matter?
When choosing new doors or windows, one of the most important measurements to understand is the U-value.
A U-value measures how much heat passes through a material. The lower the U-value, the better the product is at preventing heat from escaping.
For homeowners, this means choosing doors with a low U-value can help improve thermal performance, reduce heat loss, and support a more energy-efficient home.
However, thermal efficiency is not just about the glass. The overall performance of a door depends on the complete system, including:
- The aluminium frame design
- Thermal breaks within the profile
- The quality of glazing
- Weather seals and installation quality
Are aluminium bifold doors energy efficient?
Aluminium bifold doors are often chosen for their slim frames, large glass areas, and ability to connect indoor and outdoor spaces. But modern aluminium doors are also designed to deliver excellent thermal performance.
While traditional aluminium was known for conducting heat, today’s aluminium systems use thermally broken profiles. These thermal breaks help reduce heat transfer between the inside and outside of your home, helping your rooms stay warmer in winter and cooler in summer.
When choosing new doors, thermal performance is an important consideration. At Now Aluminium, our aluminium bifold doors are designed to help improve energy efficiency, achieving U-values as low as 1.1 W/m²K and a Door Energy Rating (DER) of Band B. This is achieved through thermally broken aluminium profiles combined with high-performance glazing options from 28mm to 44mm, including double and triple glazing solutions.
This means homeowners can enjoy the benefits of larger glazed openings while helping to reduce heat loss and maintain a more comfortable indoor temperature throughout the year.
How aluminium bifold doors help reduce heat loss
When improving your home's energy efficiency rating, your doors should do more than look good. They should help your home perform better.
Energy-efficient aluminium bifold doors can help by:
Keeping warmth inside
Thermally broken aluminium profiles create a barrier between the inside and outside of your home, helping reduce heat transfer and minimise heat loss.
Improving glazing performance
High-performance glazing plays a major role in thermal efficiency. Options such as double and triple glazing help improve insulation by reducing the amount of heat lost through the glass.
Creating a more comfortable living space
A thermally efficient bifold door helps maintain a more consistent indoor temperature, reducing cold areas near external openings and making your living spaces more enjoyable throughout the year.
Other ways to improve your home's energy efficiency rating
While upgrading doors and windows can make a noticeable difference, a combination of improvements usually delivers the best results.
Other ways to improve your home's energy efficiency include:
- Adding or upgrading loft insulation
- Improving wall insulation
- Sealing draughts around windows and doors
- Installing energy-efficient lighting
- Upgrading older heating systems
- Using smart heating controls
- Choosing energy-efficient glazing solutions
The best approach depends on the age, condition, and construction of your property.
Improve your home's energy efficiency with Now Aluminium
Making your home more energy efficient is about creating a space that feels warmer, costs less to run, and performs better all year round.
When upgrading your doors, choosing a system designed around thermal performance can make a significant difference. Modern aluminium bifold doors combine contemporary design with advanced engineering, helping homeowners achieve better insulation without sacrificing natural light or style.
With low U-value performance, thermally broken aluminium profiles, and high-performance glazing options, Now Aluminium bifold doors provide a practical solution for homeowners looking to improve energy efficiency while enhancing their living space.
Ready to improve your home's energy performance? Explore Now Aluminium’s range of energy-efficient aluminium bifold doors and discover how modern glazing solutions can help create a warmer, more comfortable, and more efficient home.




