Energy-Saving Windows and Doors

REHAU Windows help cut down on energy used to heat and cool your home.

It's as easy as 1-2-REHAU

You can't control rising energy costs, but you can limit your own use. Poorly insulating windows and doors waste energy and drive up your cost to maintain comfort.

The high insulation rating of our windows and doors leads to up to 35% better energy performance when compared to alternative framing materials. A clear plus for your wallet! Make the right choice today with new REHAU energy-saving windows and doors. You can greatly reduce your energy use and save money.

Energy Savings With REHAU Windows


How much energy can you save?

Find out! Use our web app to compare two systems: 
Energy Savings Estimator 


Well-insulated windows and doors: The U-value, explained.

When comparing energy-efficient windows, the U-value is often mentioned. The U-value is the thermal transmittance coefficient. It is used to evaluate a window's heat insulation and indicates the amount of energy that flows through a 1 sqft surface in 1 hour. The lower this value is, the higher the heat insulation. Compared to conventional, single-glazed window with U-values averaging 0.43, our windows can reach down to 0.13. 

Our windows and doors can do more.

They can help you:

What style do you want? In our range of window and door systems, you will find the perfect one for your home:

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System 1400 is a truly versatile system with frames available with or without an integral nailing fin. In addition ...

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A window that combines the simplicity of a side-load design with high performance, suitable for both new ...

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A very unique product for large openings in both residential and commercial markets. The tilt-turn is the dominant ...

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