Energy Renovation Quote in Luxembourg
Compare up to 3 quotes from certified contractors for your energy renovation in Luxembourg. Insulation, heat pumps, windows… Free, no commitment, reply within 48h.
Why renovate your home energetically in Luxembourg in 2026?
In Luxembourg, the residential property market is one of the most energy-intensive in Europe. Over 60% of homes were built before the era of modern insulation standards, and most have an energy passport rated between F and G. Renovating your home in 2026 is therefore both a profitable investment and a climate necessity.
| Benefit | Concrete impact |
|---|---|
| 💰 Bill savings | 50% to 80% reduction on energy bills |
| 🏡 Property value | +15% to +20% on resale price |
| 🌍 Carbon footprint | CO₂ emissions divided by 2 to 4 |
| 🏛️ State grants | Up to 62.5% Klimabonus subsidy |
| 🌡️ Thermal comfort | Uniform warmth in winter, coolness in summer |
The 2026 Klimabonus grants are among the most generous ever offered in Luxembourg. The new Klimabonus Wunnen scheme introduces clear flat-rate amounts per m², bonuses for ecological materials and a pre-financing mechanism for certain works. Don’t delay: invoices must be issued before 31 December 2030.
Which works to include in your energy renovation quote?
Energy renovation is not limited to a single intervention. It covers a range of works that, combined, allow you to significantly improve your energy passport. Here are the items your partner contractor will include in your quote:
- Façade (exterior walls) — €130 to €280/m²: eliminates 15-25% of heat loss
- Roof/loft — €80 to €160/m²: top priority, 25-30% of heat escapes through the roof
- Floor/ground floor — €60 to €90/m²: reduces cold air infiltration
- Air-water heat pump — from €6,500 after grants: replaces gas or oil boiler, savings up to 50%
- Dual-flow VMC ventilation — €8,000 to €16,000: essential in a well-insulated home
- Window replacement — €500 to €1,500/unit: triple glazing recommended
A complete energy renovation quote must always start with an energy audit of your home. This is mandatory to benefit from Klimabonus, and it is also the surest way to identify priority works. Our partner contractors guide you through this process from A to Z.
In what order to prioritise energy renovation works?
If your budget doesn’t allow you to do everything at once, here is the order recommended by our experts in Luxembourg. The goal: maximise energy savings and Klimabonus grants at each stage.
| Priority | Works | Energy impact | Available grants |
|---|---|---|---|
| 1 — First | Roof/loft insulation | 25-30% of heat loss | Klimabonus + 3% VAT |
| 2 — Then | Exterior wall insulation (ITE) | 15-25% of heat loss | Klimabonus + 3% VAT |
| 3 — If possible | Heating replacement (heat pump) | Up to 50% savings | Klimabonus + Enoprimes + 3% VAT |
| 4 — Complementary | Windows & ventilation | 10-15% of heat loss | Klimabonus + 3% VAT |
It is strongly recommended to insulate your home before installing a heat pump. In an uninsulated home, your heat pump will have to work at full power, reducing its efficiency and increasing your electricity bills. Insulation first, heating second: this is the golden rule of energy renovation in Luxembourg.
Energy renovation prices in Luxembourg in 2026
Here are the average prices observed in the Luxembourg market in 2026. These rates include supply and installation.
Prices by type of work (installation included)
| Type of work | Average price 2026 | Klimabonus grants |
|---|---|---|
| Exterior wall insulation | €130 – €280/m² | €60 to €115/m² |
| Lost loft insulation | €80 – €130/m² | Klimabonus |
| Converted loft insulation | €120 – €160/m² | Klimabonus |
| Ground floor insulation | €60 – €90/m² | Klimabonus |
| Double glazing window | €500 – €800/unit | €70/m² of glazing |
| Triple glazing window | €800 – €1,500/unit | €70/m² of glazing |
| Air-water heat pump | €16,000 – €24,000 | Up to €9,500 |
| Geothermal heat pump | €30,000 – €40,000 | Up to €14,000 |
| Dual-flow ventilation | €8,000 – €16,000 | Klimabonus |
Prices collected from partner contractors in Luxembourg — 2026. Rates vary by brand, materials and complexity of works.
Total budget by renovation type
| Renovation type | Price/m² | Total budget (120 m² home) | Estimated grants |
|---|---|---|---|
| Partial renovation (1-2 elements) | €200 – €400/m² | €24,000 – €48,000 | 30 – 45% |
| Intermediate renovation (insulation + heating) | €400 – €800/m² | €48,000 – €96,000 | 35 – 50% |
| Full renovation (everything included) | €800 – €1,500/m² | €96,000 – €180,000 | Up to 62.5% |
What budget for your specific project?
Get a precise, free quote in less than 48h. Our certified contractors in Luxembourg analyse your situation and propose the most cost-effective solution.
Get my free quotes →Financial grants for your energy renovation in Luxembourg in 2026
Luxembourg offers some of the most generous grants in Europe for energy renovation. These three schemes are cumulative.
| Grant | Amount | Main conditions |
|---|---|---|
| 🏛️ Klimabonus | Up to 62.5% of insulation works Fixed amounts €/m² by material |
Property > 10 years · Approved company · Certified energy advisor |
| ⚡ Enoprimes | €1,500 (heat pump, insulation…) | Enovos agreement in principle before works |
| 🏘️ Municipal grants | €1,500 to €3,000 depending on municipality | Varies by municipality (Strassen, Mamer, etc.) |
| 🏷️ 3% VAT | -14% on the entire invoice Cap: €50,000 recoverable VAT |
Property > 10 years · Certified installer · Primary residence |
| 🌱 Energy advisory | €1,500 (energy audit lump sum) | Mandatory for full Klimabonus · Reimbursed at settlement |
| 🏦 Klimaprêt | 1.5% interest subsidy Up to €100,000 over 15 years |
Via approved bank (e.g. BGL BNP Paribas) |
The 2026 Klimabonus Wunnen scheme introduces clear flat-rate amounts in €/m² by material type and performance level. The more ecological your insulation (wood fibre, sheep’s wool, bio-sourced materials), the higher the subsidy. Insulation containing more than 50% recycled materials receives an additional bonus of €45/m². A « Social top-up » can double the grant for low-income households.
How to get your energy renovation quote?
The process is simple, completely free and without commitment. Our certified partner contractors in Luxembourg commit to responding within 48h. Here are the steps:
Describe your project — type of renovation, surface area, situation. Our system identifies available certified contractors in your area in Luxembourg.
One of our « Made in Luxembourg » certified partners calls you back to understand your project and arrange a free technical visit to your home.
The contractor inspects your home, takes precise measurements and evaluates priority works. They present several scenarios adapted to your budget and energy class objectives.
You receive a complete quote with precise pricing (materials, installation, guarantees), Klimabonus grant simulation and return on investment estimate. No commitment required.
If you choose to proceed with the works, your contractor guides you from A to Z: energy audit, Klimabonus applications, Enoprimes, municipal grants, site supervision.
Why choose Renov.lu’s partner contractors?
In Luxembourg, there are many energy renovation companies. Not all offer the same guarantees. Here is what distinguishes our partners:
| Criterion | Our Renov.lu partners |
|---|---|
| 🏅 Certification | « Made in Luxembourg » certified · Approved for Klimabonus |
| 📅 Experience | Over 20 years of energy renovation experience in Luxembourg |
| 🔨 Projects completed | Over 1,000 projects in Luxembourg |
| 📋 Transparent quote | Full detail (materials, installation, guarantees, Klimabonus grants) |
| ⚖️ Prices | Verified to be consistent with Luxembourg market prices |
| 🛡️ Guarantees | 10-year warranty · Public liability insurance |
| 📞 Responsiveness | Response within 48h · Dedicated site monitoring |
Ready to start your energy renovation?
Fill in the form at the top of the page and receive up to 3 free quotes from certified contractors in Luxembourg within 48h. No commitment.
Receive my 3 free quotes →FAQ — Frequently asked questions about energy renovation quotes in Luxembourg
How to get an energy renovation quote in Luxembourg?
To get your free quote, fill in our form at the top of the page. A « Made in Luxembourg » certified contractor will contact you within 48 working hours to schedule a free technical home visit. After the visit, you’ll receive your detailed quote with precise pricing, Klimabonus simulation and energy savings estimate. Everything is free and without commitment.
Which works should be included in an energy renovation quote in Luxembourg?
A complete energy renovation quote generally includes: roof/loft insulation (25-30% of thermal losses), exterior wall insulation (15-25% of losses), heating replacement with a heat pump, triple glazing windows and dual-flow ventilation installation. The absolute priority is insulation, which maximises savings and Klimabonus grants. The contractor will recommend priority works during the technical visit.
What is the price of energy renovation in Luxembourg in 2026?
Energy renovation costs range from €200 to €1,500/m² depending on the scope of work. For a 120 m² house, budget between €24,000 (partial renovation) and €180,000 (full renovation). Klimabonus grants can cover up to 62.5% of insulation work costs, significantly reducing your out-of-pocket costs. Request a free quote for a precise estimate adapted to your home.
What financial grants are available for energy renovation in Luxembourg in 2026?
Several grants can be combined: Klimabonus (up to 62.5% of insulation works, with fixed €/m² amounts by material), Enoprimes (~€1,500), municipal grants (€1,500 to €3,000 depending on your municipality), 3% VAT (instead of 17%, capped at €50,000 recoverable VAT) and a €1,500 grant for energy advisory. For low-income households, a « Social top-up » can double the Klimabonus. The Klimaprêt also allows you to borrow up to €100,000 at a reduced rate.
Should you insulate before installing a heat pump?
Yes, thermal insulation is strongly recommended before installing a heat pump. In a poorly insulated home, a heat pump will have to run at full power to maintain the desired temperature, reducing its efficiency (COP) and increasing your electricity bills. By insulating first, you reduce heating needs by 25 to 55%, then allowing your heat pump to operate at maximum efficiency. This combination also allows you to obtain the best Klimabonus grants.
Is the energy renovation quote free?
Yes, the quote is completely free and without commitment. It includes the home technical visit (30 min to 1h), personalised study of your project, simulation of available Klimabonus grants and an estimate of achievable energy savings. You only pay if you decide to carry out the works. Our partner contractors are committed to transparent quotes, with no hidden charges.
Are Klimabonus grants paid before or after the works?
Klimabonus grants are paid after the works are completed. You must first obtain a Klimabonus agreement in principle before starting, carry out the works, then submit the settlement request with invoices. For solar panels only, a pre-financing mechanism allows the grant to be deducted directly from the installer’s invoice since 2026. Our partner contractors guide you through all administrative procedures free of charge.