Introduction
When building a new home or replacing old windows in Australia, choosing the right aluminium windows can make a difference to indoor comfort and energy efficiency.
Windows are one of the areas where heat can enter and escape a home. In summer, unwanted heat can enter through the glass, while in winter, indoor warmth can be lost through poorly insulated windows.
So, are aluminium windows energy efficient? The answer depends on the complete window system, including the aluminium frame, glazing, seals and overall design.
What Makes Aluminium Windows Energy Efficient?
Aluminium is strong, durable and low maintenance, but it is also a good conductor of heat. This is why the frame design and glazing specification are important when choosing energy-efficient aluminium windows.
1. Thermal Break Aluminium Frames
Thermal break aluminium windows use a thermal insulating strip between the internal and external parts of the aluminium frame.
This helps reduce heat transfer through the frame and can improve the overall thermal performance of the window.
For homeowners looking for better-performing aluminium windows, thermal break systems can be an option worth considering, particularly when combined with suitable glazing.
2. Double Glazing
Double glazing consists of two panes of glass separated by a sealed gap, which can be filled with insulating gas such as argon.
Compared with single glazing, double glazing can reduce heat transfer through the glass and help improve indoor comfort.
For an aluminium window system, combining double glazing with a well-designed frame can provide a more complete approach to thermal performance.
3. Low-E Glass
Low-E glass features a special coating designed to reduce heat transfer while allowing natural light into the home.
Depending on the glass specification and application, Low-E glass can help reduce unwanted solar heat gain in summer and heat loss in winter.
How Energy Efficient Windows Can Save You Money？
Energy-efficient windows can cost more upfront, but they can help reduce the amount of heating and cooling needed to maintain a comfortable indoor temperature.
The actual savings will vary depending on factors such as your home’s location, window size, orientation, glazing specification, insulation and heating or cooling habits.
Beyond energy savings, energy-efficient windows can also be a worthwhile consideration for homeowners planning to renovate or invest in their property. Better thermal performance, improved indoor comfort and modern window systems can all contribute to the overall quality and functionality of a home over the long term.
Aluminium Windows and 7-Star NatHERS
For new homes in Australia, windows can play an important role in the home’s overall thermal performance and 7-Star NatHERS assessment.
The 7-Star NatHERS rating applies to the whole home, not windows alone. However, factors such as glazing type, aluminium frame design, window size, orientation and shading can all affect how much heat enters or leaves the home.
For example, double glazing, Low-E glass and thermal break aluminium frames** can help reduce heat transfer and improve thermal performance when correctly specified for the home.
Energy Efficient Aluminium Windows from Sunny Windows & Doors
At Sunny Windows & Doors, we supply custom aluminium windows and doors for Australian homes and projects.
Our range focuses on double glazed aluminium windows and doors, with both thermal break and non-thermal options available. We offer a wide range of window and door styles commonly used in modern Australian homes, including sliding, awning, casement, fixed, bi-fold and hinged options. For more distinctive designs, we can also manufacture custom-shaped windows to suit your home’s design and architectural requirements.
Whether you’re building a new home or replacing existing windows, we provide a complete service from window selection and measurement to supply and professional installation.
FAQ
Are aluminium windows energy efficient?
Aluminium windows can be energy efficient when they are correctly designed and specified. Factors such as thermal break frames, double glazing, Low-E glass, seals and installation all affect overall performance.
Are double glazed aluminium windows worth considering?
Double glazed aluminium windows can provide improved thermal insulation compared with single glazing.
Are thermal break aluminium windows better for energy efficiency?
Thermal break aluminium frames are designed to reduce heat transfer through the aluminium frame. When combined with suitable glazing, they can provide improved thermal performance.
Can aluminium windows help with 7-Star NatHERS?
Windows are one part of a home’s overall NatHERS assessment. Glazing, frame type, window size, orientation and shading can all affect the home’s thermal performance.
