Luxembourg Window Replacement 2026 Guide: Materials, Prices & Grants
At a glance
- In 2026, the Klimabonus Wunnen programme replaces previous grants and offers 70 EUR per m² of glazing replaced.
- Top materials in Luxembourg are PVC, aluminium and wood, with thermal performance suited to the local climate.
- The super-reduced TVA rate of 3% applies to renovation works on homes older than 2 years.
- Average cost for complete window replacement ranges between 8 000 and 18 000 EUR depending on surface and material.
- Additional grants exist for combined insulation and high-energy-performance window installation.
Key information
| Prime Klimabonus fenêtres | 70 EUR/m² de vitrage |
| TVA super-réduite rénovation | 3 % |
| Prix moyen châssis PVC | 350-550 EUR/m² |
| Prix moyen châssis aluminium | 450-750 EUR/m² |
| Prix moyen châssis bois | 600-900 EUR/m² |
| Surface moyenne logement luxembourgeois | 25-40 m² de vitrage |
| Prime isolation toiture combinée | jusqu'à 15 000 EUR |
| Délai moyen travaux | 3-6 semaines |
« The Klimabonus Wunnen scheme makes 2026 an ideal year for homeowners to upgrade windows and cut energy bills. »
Introduction: Why Replace Windows in Luxembourg in 2026?
Replacing châssis is a major step toward better energy efficiency. The new Klimabonus Wunnen programme provides attractive financial support from January 2026.
Available Window Materials in Luxembourg
Owners can select from materials suited to the Grand Duchy’s temperate climate.
- PVC: excellent value and thermal insulation
- Aluminium: strength and modern aesthetics
- Wood: natural look and long-term performance
2026 Window Prices Comparison
Costs vary by material and performance. Average prices range from 350 EUR/m² for PVC to 900 EUR/m² for premium wood frames.
Klimabonus Wunnen 2026 Grants for Windows
The scheme pays 70 EUR per m² of replaced glazing. Grants can be combined with roof insulation support of up to 15 000 EUR.
3% Super-Reduced TVA and Administrative Steps
The TVA super-réduite à 3% applies to renovation of homes over two years old. Applications are submitted via guichet.public.lu.
Choosing and Installing New Windows
Use certified installers to ensure airtightness and maximum energy savings. Check performance labels before purchase.
Frequently asked questions
Klimabonus Wunnen provides 70 EUR per m² of glazing replaced.
Yes, for homes older than 2 years undergoing renovation works.
PVC, aluminium and wood are the most popular choices.
Submit applications online via Klima-Agence or guichet.public.lu.
Yes, roof insulation support up to 15 000 EUR can be combined under certain conditions.
Sources
External sources
Data verified in April 2026