Order Windows in August for Winter Installation in Luxembourg

The Right Time to Order Your Window Frames

In Luxembourg, replacing windows is a major investment to improve your home's energy efficiency. However, most homeowners wait until autumn to start, creating high demand for manufacturers. Result: delivery times lengthen and installations are postponed until late winter. That's why ordering your window frames in August is a winning strategy to guarantee installation before the first cold snaps.

By ordering now, you avoid the high-season rush and ensure your new windows are installed before November, just in time for winter. Additionally, companies often have more availability in August, which can translate into more competitive prices and a wider selection of materials and colors.

Window Replacement: A Profitable Investment

Replacing your windows isn't just about comfort; it's also a way to significantly reduce your heating bills. Old windows are responsible for 10-15% of a home's heat loss. By opting for double or triple glazing, you improve thermal and acoustic insulation, increasing your property's value.

In Luxembourg, the Klimabonus Wunnen 2026 program (which replaced PRIMe House in January 2022) offers financial aid for window replacement: you can receive 70 EUR per m² of replaced glazing. This grant is combinable with the reduced 3% VAT for renovation work in homes over 2 years old. With these aids, the net cost of your new windows can be significantly reduced.

Manufacturing and Installation Times: Why August Is Ideal

Manufacturing a custom window frame typically takes 4-6 weeks in the low season, but this can stretch to 8-12 weeks between September and November when demand peaks. By ordering in August, you ensure manufacturing is completed for installation in September or early October, well before the harsh cold.

• Better artisan availability: In August, companies have fewer projects, so they can dedicate more time to you.
• Faster installation: With reduced lead times, you can schedule installation at a convenient date without stress.
• Avoid bad weather conditions: By installing before winter, you avoid rain, wind, or cold that can complicate the work.

How to Benefit from Financial Aids in 2026

To benefit from the Klimabonus Wunnen, you must submit your application before starting work. By ordering your frames in August, you have time to gather quotes, submit your file, and get financing approval before the project begins. The procedure is done online via the Klima-Agence website or the guichet.public.lu portal.

Here are the key steps:

• Check your eligibility on klima-agence.lu.
• Get a quote from a certified company.
• Submit your grant application before work begins.
• After installation, submit invoices for reimbursement.

Remember, the window grant is 70 EUR/m² of glazing, but other aids exist: roof insulation is paid at a rate per square metre insulated, from 35 to 115 EUR/m² depending on the insulant and the performance standard reached (up to 140 EUR with the transitional increase), up to 10,000 EUR for photovoltaic panels (about 8,300 EUR for 10 kWc), and up to 2,250 EUR for a home battery.

Choosing the Right Window Frame Type for Your Home

The choice of materials is crucial for durability and insulation. In Luxembourg, the three most common options are:

For optimal energy performance, choose frames with a Uw coefficient below 0.8 W/m²K and triple glazing. These criteria are often required for the highest grants.

Illustrative Case: A Typical Project in Luxembourg

Take the example of a 120 m² single-family home with 10 windows to replace, totaling about 20 m² of glazing. The total project cost is estimated at 12,000 EUR (including installation). Thanks to Klimabonus, you receive 70 EUR/m², i.e., 1,400 EUR in grants. Applying the reduced 3% VAT instead of 17% saves you about 1,680 EUR more. Your net cost is therefore about 8,920 EUR, a saving of nearly 26%.

This case shows that ordering in August and taking advantage of aids allows substantial savings while improving your comfort before winter.

Mistakes to Avoid When Ordering

• Waiting until the last minute: Manufacturing times are longer in autumn; you risk waiting until the following spring.
• Ignoring available aids: Many homeowners don't know about Klimabonus and miss out on hundreds of euros.
• Not comparing quotes: Take time to request at least 3 quotes from certified companies.

By ordering now, you give yourself every chance to carry out your project smoothly, without stress, and with optimal financing.

Conclusion: Act Now

August is the ideal time to order your window frames in Luxembourg. Not only do you guarantee installation before winter, but you also benefit from reduced lead times, better prices, and financial aids like the Klimabonus Wunnen. Don't let this opportunity pass: contact a certified carpenter today and start your energy renovation project.