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20.10.2025

Replace windows and save energy: How to make a successful renovation

Close-up of ROMA Roller Shutters reflected in windows

Replacing windows is one of the most effective measures for increasing the energy efficiency of a house. Especially in combination with modern solar shading from ROMA, you get the best results when replacing windows. Whether for a complete renovation or the gradual modernization of individual parts of a building: Replacing old windows pays off quickly. In this article, you can find out how best to proceed, what to look out for and what role Roller Shutters and External Venetian Blinds play.

Use the ROMA specialist dealer search to find competent advice and professional implementation in your area.

Replace windows and save energy: The most important facts in brief

  • Advantages: Replacing windows reduces heat loss, lowers energy costs and improves living comfort.

  • Efficiency : It is particularly worthwhile replacing windows and Roller Shutters at the same time in order to optimally coordinate both systems.

  • External sun protection systems: ROMA Roller Shutters or External Venetian Blinds also increase thermal insulation in summer.

  • Professional planning: Structural requirements, lighting and Smart Home integration should be taken into account.

  • Use subsidy programs for renovations: ROMA offers a practical BAFA subsidy assistant for this.

Why and when is it worth replacing windows?

Old windows with simple glazing and poor seals are often real energy guzzlers. Valuable heat escapes through the glass surfaces and leaky frames in winter, while the rooms heat up considerably in summer. Replacing them with modern, energy-efficient windows has numerous advantages:

  • Improve thermal insulation: Triple glazing and optimized frames significantly reduce heat loss.

  • Saveenergy and heating costs: The heating requirement is reduced - which is good for the environment and your wallet.

  • Increase comfort: less draughts, more peace and quiet, better lighting control.

The measure is particularly effective if you replace windows with Roller Shutters at the same time - because this is the only way to create a perfectly coordinated system for year-round climate protection.

Replace windows and Roller Shutters: The ideal combination

An ageing roller shutter box is often not only a problem visually, but also thermally. Older top boxes in particular let a lot of air through and act as a thermal bridge. Those who replace windows and Roller Shutters at the same time benefit twice over:

  • Thermal and sound insulation thanks to integrated systems

  • Burglar resistance thanks to modern security components

  • Individually controllabledimming, glare protection and privacy protection

  • Smart Home integration for maximum convenience

ROMA offers perfectly coordinated solutions for this - e.g. ROMA Top-Mounted Roller Shutters, which can be integrated into the building envelope and achieve the highest insulation values.

Close-up of large renovated window with Roller Shutters from ROMA

Step by step: How to replace the windows

If you want to replace windows and Roller Shutters, you should proceed in a structured manner - because only with the right planning can an energy-saving measure become a sustainable gain in comfort. From the initial assessment to the final implementation, window replacement is efficient, clean and perfectly tailored to your structural conditions.


1. analyze the condition

Before you replace the windows, a professional assessment by a specialist company is advisable. This will identify the energy-related weak points and develop suitable solutions.


2. planning and selection

Together with a ROMA specialist partner, you plan the new solar shading system for your windows - including the selection of suitable Roller Shutters or external blinds. Important here:

  • Considerorientation to the sun

  • Takewindow size and building structure into account

  • Determinethe type of sun protection and control system


3. professional installation

Replacement is usually carried out quickly and with minimal intervention in the building fabric. If required, Smart Home controls for sun shading , solar drives or insect screens can also be integrated directly - for an all-round well thought-out system.

Energy-efficient sun shading as a supplement

A modern Roller Shutters can do more than just darken the room: They actively support thermal insulation in winter and provide effective thermal protection in summer when you want to keep the heat out. ROMA systems such as the Front-Mounted Roller Shutters with solar drive even work completely independently of electricity - ideal for renovations.

External Venetian blinds or vertical awnings also provide efficient daylight control, privacy protection and reduce heat input - with a modern design.

Use funding opportunities

Energy-efficient refurbishment by replacing windows and Roller Shutters can be subsidized by the state - for example through BAFA programs as part of the Federal Subsidy for Efficient Buildings (BEG). ROMA supports you with a free BAFA funding assistant, which helps you to check eligibility for funding quickly and easily.

Replacing windows and Roller Shutters with ROMA specialist partners

Regardless of whether you are replacing windows with Roller Shutters or planning a complete Smart Home sun shading concept - implementation should always be carried out by qualified specialist partners. They ensure:

  • Precise planning and measurements

  • Professional installation

  • Individual advice on design, function and technology

Use the ROMA specialist dealer search now and start replacing windows and sun shading systems with expert support.

Frequently asked questions (FAQ) about replacing windows and saving energy

Why should I replace windows with Roller Shutters?

The combined replacement of windows with Roller Shutters ensures an optimally coordinated system in terms of thermal insulation, burglar resistance and comfort. Energy losses can be minimized and functions such as darkening, glare protection at the workplace and Smart Home control can be integrated at the same time.

Is the replacement of windows and Roller Shutters eligible for funding?

Yes - both windows and external sun protection systems such as Roller Shutters or External Venetian Blinds can be subsidized as part of energy-efficient refurbishment, e.g. via BAFA programs. ROMA offers a free subsidy assistant to help you with your application.

To the BAFA subsidy assistant

Is it worth replacing windows even with partial modernization?

Definitely. Even if you are not renovating the entire house, it can be worthwhile replacing individual windows with outdated components. Especially in combination with Roller Shutters or External Venetian Blinds, you can increase living comfort and reduce your energy costs in the long term.

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