Do you feel drafts, are your energy bills rising or does outside noise bother you? It's time to consider renovating your windows.

Part of the guide
Energy renovation
Energy renovation guide: CECB, insulation, subsidies.
Read the full guide
High-performance windows play an essential role in your home's insulation. Here are the main benefits of this kind of renovation:
Reduced heat loss from a window: Up to 15% of the indoor heat can escape through old wooden windows. Opting for PVC double glazing reduces this loss five-fold. With aluminium featuring a thermal break, it can be reduced by a factor of eight.
Enhanced acoustic comfort: Quality windows can attenuate outside noise by up to 30 dB, providing a more peaceful environment, particularly in urban areas or near major roads.
Added value for your property: Replacing your windows improves your home's energy performance, a criterion increasingly sought after by buyers. This represents a considerable asset in the event of resale.
Reduced energy costs for your home: By improving the thermal insulation of your home, your windows will prevent unwanted heat exchange. Your heating and air-conditioning system will run less, which quickly translates into lower energy bills.
We advise following these steps to carry your project through successfully:
Assess your needs: Before anything else, assess the current state of your windows. Do you want to improve thermal insulation, acoustic insulation, or both? Does your home have any aesthetic or technical constraints that need to be respected?
Choose the right material: Each material has its own specifics:
Select suitable glazing: Glazing is a key element of a window's energy efficiency. Give priority to double or triple-glazed windows with a low Ug coefficient. Glazing with reinforced insulation (VIR) is also a good option to improve thermal insulation.
Take precise measurements: Exact dimensions guarantee custom-made manufacturing. We advise calling on a professional to avoid errors.
Choosing the installer: The installation is as important as the product itself. Call on a qualified and experienced professional, compare the quotes and check their references.
Installing the windows: The installation must be carried out carefully to guarantee airtightness and watertightness. Meticulous fitting also ensures good thermal and acoustic insulation, while extending the service life of the joinery.
After changing your windows, the difference in indoor temperature quickly becomes noticeable. Warm air is better contained, which prevents rooms from overheating. A well-managed renovation can generate up to 30% savings on your heating bill, especially if it is combined with other works such as loft insulation.
The price varies according to several criteria: dimensions, materials, type of glazing, difficulty of access to the site or even the quality of the finishes. PVC windows with double glazing are generally the most economical, while aluminium windows with triple glazing offer excellent thermal protection but represent a larger investment.
Replacing your windows represents a significant investment, but Switzerland offers several schemes to ease the costs, provided you meet certain technical and administrative criteria. Here is an overview of the main aid available in Switzerland:
Buildings Programme (federal + cantonal): Set up by the Confederation and the cantons, the Buildings Programme supports energy renovation, but no longer provides aid for simply replacing windows.
Cantonal and municipal aid: In addition to the Buildings Programme, many cantons and municipalities offer their own financial aid. This support can take the form of additional subsidies, preferential-rate loans or even tax exemptions.
Energy supplier bonuses: Certain energy suppliers encourage improvements in energy efficiency by paying bonuses for the installation of high-performance windows. These bonuses can generally be combined with other public aid.
Tax deductions: Expenses incurred for energy renovation, including window replacement, can often qualify for tax deductions.
EDIREX simplifies your window renovation. Our platform helps you to:
As you will have understood, replacing your windows is an investment in long-term comfort, which reduces your expenses and enhances the value of your home.
Compare up to 3 free quotes from verified artisans in French-speaking Switzerland. No commitment, response within 48h.