Renovation in Luxembourg:
compare verified quotes

Renov.lu is the quote platform for renovation and energy projects in Luxembourg: compare 3 free quotes from verified Luxembourg-based contractors, with market prices and 2026 grants calculated before you sign. Three quotes: enough to compare, without being contacted by a dozen companies. Our free simulators calculate your grants (Klimabonus, 3% VAT instead of 17%) and your budget; for a single trade, find a verified tradesperson.

⚡ Simulate my renovation grants → See all simulators ↓
🔨 Contractor? Become a partner →
Our 100% free simulators
🏠
Energy renovation
🔥 TOP ›
♨️
Heat pump
Popular ›
❄️
Air conditioning
New ›
☀️
Solar panels
New ›
🔨
Renovation works
›
💸
3%
VAT instead of 17% on your works
For renovating your main residence over 10 years old, with the benefit capped at €50,000 per dwelling
💶
€12,000
Klimabonus for an air-to-water heat pump
For replacing an oil or gas boiler in a house, if ordered before 30 June 2027 (€10,000 after that)
📋
3 quotes
from verified companies within 48h
Companies established in Luxembourg, business permit checked; free and without obligation; three quotes, the right number to compare without being swamped with calls
⚡
3 min
to estimate your grants
The average time to get a personalised estimate with our 100% free simulators, no registration needed
Energy renovation

Heat less, pay less

Our guide to energy renovation in Luxembourg covers the most subsidised works: since 2026, Klimabonus Wunnen pays flat rates (per m² insulated or per installation), topped up until 30 June 2027, on top of 3% VAT and, depending on the municipality, local grants.

♨️
Heat pump
Replace your gas or oil boiler: the 2026 Klimabonus pays €12,000 for an air-to-water heat pump and €14,000 for ground-source if ordered before 30 June 2027. Claim after installation, no prior approval.
🎁 Air-to-water €12,000 · Ground-source €14,000
⚡Simulate my heat pump grants›
📖Complete heat pump guide›
🏠
Energy renovation
EWI, roof insulation, triple glazing, MVHR. Get a complete renovation plan with all 2026 Klimabonus grants calculated for your property.
🎁 Klimabonus flat rates + 3% VAT
⚡Simulate my renovation grants›
📖Energy renovation guide›
☀️
Solar panels
Self-consumption with direct pre-financing: the installer deducts Klimabonus from your invoice, €5,742 for 6 kWp and €10,000 from 15 kWp, in exchange for the feed-in tariff.
☀️ Klimabonus up to €10,000 — pre-financing ✓
⚡Simulate my solar production›
📖Solar panels guide Luxembourg›
🧱
Thermal insulation
Facade (EWI), roof, floor, windows: the 2026 Klimabonus funds insulation per m², up to €140/m² for a wood-fibre facade (€155/m² with cladding) if approval in principle is requested before 30 June 2027.
🎁 Up to €155/m² depending on insulation
⚡Simulate my insulation grants›
📖Insulation cost in Luxembourg›
Financial grants 2026

Klimabonus 2026: flat rates, not percentages

Klimabonus Wunnen is the state’s main grant for energy renovation. Since the law of 24 July 2026 it pays a fixed amount per m² insulated or per installation, capped at 60% of the cost for insulation, and combines with 3% VAT.

€14,000
🌍 Ground-source heat pump
€12,000
♨️ Air-to-water heat pump
€140/m²
🌿 Biosourced facade insulation
3% VAT
💸 instead of 17% on works
⚡ Calculate my personalised grants →
€17,500
of Klimabonus at most for an air-to-water heat pump replacing an oil boiler in 2026: official example combining €12,000 and three bonuses (heat distribution upgrade, tank removal, water protection zone)
  • 💶 Klimabonus Wunnenflat rates 2026
  • 📅 Temporary top-upuntil 30/06/2027
  • 💸 Super-reduced 3% VATcap €50,000
  • 🏘️ Municipal grantsdepending on municipality
  • 🏦 Klimaprêt1.5% interest covered
⚡ Simulate my grants in 3 min →

⚠️ Higher amounts for a heat pump ordered, or approval in principle requested, before 30 June 2027. Pre-financing: already available for solar PV; for heat pumps and insulation only on invoices issued from 1 January 2027.

All our services

From renovation to new construction

Guides, free simulators and quotes from verified companies for all your projects in Luxembourg: extension, heating, EV charging, water heaters, condominium renovation, business premises.

🔨
Classic renovation
Kitchen, bathroom, flooring, extension, interior renovation: our guide to home renovation in Luxembourg covers the steps, budget and grants. Estimate your works cost in 3 minutes with our simulator tailored to the Luxembourg market.
⚡Estimate the cost of my works›
📖Renovation works guide›
❄️
Air conditioning
Reversible air conditioning to heat in winter AND cool in summer with a single system. Quick installation, ideal for apartments without a hydraulic circuit. Note: no Klimabonus and no 3% VAT for air conditioning.
⚡Simulate my air conditioning›
📖Air conditioning guide Luxembourg›
🏗️
New construction
Building or extending in Luxembourg: €2,500 to €4,000/m² excluding land and VAT for a new house, €1,300 to €3,000/m² for an extension, building permit and 3% VAT.
📖Construction guide Luxembourg› 📖House extension: cost and permits› 📋Free construction quote›
📊
Energy performance certificate
Mandatory for all sales or rentals in Luxembourg. An approved expert sets your energy class and the priority works to improve your property: €475 for a house at the renov.lu negotiated rate.
📋Order my energy certificate›
📖Energy certificate guide›
📊
Energy performance certificate
Mandatory for all sales or rentals in Luxembourg. An approved partner expert calls you back within 24 h and issues your official certificate, valid for 10 years: €475 for a house.
📊 Order my certificate →
How it works

Your project in 4 steps

1
⚡
Simulate your grants
Use our free simulators to estimate in 3 minutes the grants your project may qualify for.
2
📋
Receive your quotes
Get 3 quotes from verified companies within 48 working hours. Compare offers, prices and warranties, with no obligation: find a tradesperson.
3
🎁
Apply for your grants
Insulation, windows and ventilation: approval in principle before the works. Heat pumps and solar PV: claim after installation (PV can be pre-financed by the installer).
4
📉
Enjoy the savings
Lower consumption from the first winter and a better energy certificate, whose class appears in every sale or rental listing.
Why Renov.lu

Verified figures, established companies

Built by homeowners who experienced the complexity of the grant system first-hand, Renov.lu gives you the tools to renovate with confidence. Who we are

🇱🇺
100% tailored to Luxembourg
Our guides, simulators and prices reflect the Luxembourg market. Klimabonus, 3% VAT, Klimaprêt, municipal grants: every amount is checked against the official text and dated.
✅
Verified companies
Every partner company is established in Luxembourg and holds a business permit for its trade, verified when it joins the network; companies that generate disputes are removed.
🆓
Completely free, no commitment
Our simulators, guides and quote requests are 100% free. No account to create, no credit card required. You keep full control of your decision at every step.

Start your project today

Estimate your grants with our free simulators, receive 3 quotes from verified companies and decide with full knowledge of the facts.

⚡ Simulate my grants for free → Request a free quote →