WHY ENERGY EFFICIENCY MATTERS MORE THAN EVER

Smarter windows. Lower bills. Better living.

Australia’s energy bills are rising fast, and many households are feeling the pressure—especially in large homes or regions with extreme heat or cold. Whether you’re in a cool southern climate or trying to keep your home cool in the tropics, upgrading from single-glazed windows to high-performance systems can dramatically reduce your energy consumption and boost indoor comfort all year round.

The Hidden Energy Leak

Windows and doors are often the weakest link in a home’s thermal envelope. Traditional single-glazed windows, especially those with aluminium frames, allow a huge amount of heat to pass through—both in and out. That means more effort (and more money) spent on air conditioning or heating, just to maintain comfort.

What Makes Our Systems So Efficient?

The secret is in the multi-chambered uPVC profile, expert sealing, and non-conductive materials.
It starts with the frame. Our profiles are made in Germany using advanced uPVC with multi-chambered designs. Think of these chambers like insulation in your walls—they slow down the transfer of heat. The more chambers, the better the performance.

Next comes the glass. By using double glazing (two panes of glass with an insulating gap in between), you’re creating an additional barrier to temperature change. Pair that with quality seals and correct installation, and you have a powerful system that keeps the outside out, and the inside in.

The result? A home that stays warmer in winter, cooler in summer—and uses far less energy year-round.

Understanding U-values

Minimises heat flow to the glass

Because the frame doesn’t transfer heat, the performance of the glazing is also preserved – keeping your home cooler in summer and warmer in winter.

But U-values can vary depending on several factors:
The window frame material and design
The type of glazing used (e.g. low-e, double-glazed, gas-filled)
Window size and placement
Orientation (north-facing, west-facing, etc.)
The style of opening (fixed, sliding, tilt & turn)

For official energy performance ratings, visit the WERS website, to see our products listed, simply search “Profine”.

U-VALUES

LONG TERM COMFORT AND SAVINGS

Designed to Keep the Cold Out – and Comfort In

Kömmerling’s German-made windows and doors are engineered for energy efficiency from the inside out. In a country like Australia, where temperatures swing from hot summers to chilly winters, our systems help create a stable, comfortable indoor environment – all while reducing your reliance on heating and cooling.

Whether you’re building a new home or upgrading an existing one, choosing Kömmerling is a long-term investment in energy savings and everyday wellbeing.

Thermal Reading Before

Thermal Reading After

A noticeable difference in the warmth of the air retained inside the home, resulting in reduced heating costs and energy consumption.

Non-Conductive uPVC Material

Unlike metal frames, uPVC does not absorb or transfer heat. That means:

No heat passes from outside through the frame
Frames stay cool to the touch, even in direct sun
Glass remains more stable, improving thermal performance

In contrast to aluminium frames (which conduct heat), Kömmerling’s uPVC acts as a thermal barrier, making your windows and doors work for you – not against you.

How Our Windows Save Energy

Kömmerling windows and doors are built to last over 40 years with minimal maintenance. That means four decades of:

Lower heating and cooling costs
Improved energy ratings for your home
Reduced environmental impact
Comfortable, healthy living spaces

Over time, the savings on your energy bills can be substantial – paying for the windows many times over. And with government energy rebates and incentives available in many regions, you may save even more upfront.

Ready to Save Energy Every Day?

Get in touch with your local Kömmerling fabricator and start enjoying a more efficient, comfortable home that works for your lifestyle — and the planet.

FIND A FABRICATOR NEAR YOU