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Air conditioning quotes in Luxembourg: compare 3 free offers
Compare 3 quotes from verified installers for your air conditioning in Luxembourg. Free, no commitment, installers respond within 48h. Three quotes: enough to spot an abnormal price without being swamped with calls.
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Monosplit vs Multisplit vs Ducted: which air conditioning to choose in Luxembourg?
This is the first question every Luxembourg resident asks when considering air conditioning. The choice depends on the number of rooms to cool, your budget and the technical constraints of your home.
| Criteria | ❄️ Monosplit | 🏠 Multisplit | 🔇 Ducted |
|---|---|---|---|
| Rooms covered | 1 only | 2 to 5 | Whole house |
| Outdoor unit | 1 | 1 | 1 |
| Discretion | Visible wall unit | Visible wall units | 100% invisible |
| Total cost installed | €2,600 – €4,550 | €4,900 – €12,500 | €9,650 – €25,000 |
| Installation time | ½ day | 1 to 2 days | 2 to 4 days |
| Ideal for | Studio, bedroom, office | Apartment, house floor | New build, full renovation |
For most homes in Luxembourg, a reversible monosplit or multisplit offers the best value for money. A reversible system (air-air heat pump) lets you cool in summer AND heat in winter — a significant advantage with Luxembourg winters. The 3% VAT rate, however, is not guaranteed: the official housing-VAT list excludes air-conditioning systems, even reversible ones.
How does air conditioning work?
An air conditioner works exactly like a refrigerator: it extracts heat from indoors and rejects it outdoors using a refrigerant fluid. The indoor unit (the « split ») draws in warm air from the room, cools it, then blows it back. The outdoor unit releases the captured heat outside.
Reversible air conditioners (air-air heat pumps) reverse this cycle in winter to capture calories from outdoor air and heat your home — even at sub-zero temperatures, down to −15°C with high-performance models.
| Mode | How it works | Efficiency (COP/EER) | Period in Luxembourg |
|---|---|---|---|
| Cooling | Extracts indoor heat → rejects outside | EER 3 to 5 | May to September |
| Heating (reversible) | Captures outdoor heat → transfers inside | COP 3 to 5 | October to April |
| Dehumidification | Reduces ambient air humidity | Variable | All year |
With a COP of 3 to 5, a reversible air conditioner produces 3 to 5 kW of heat for just 1 kW of electricity consumed — 3 to 4 times more efficient than a standard electric heater. In summer it cools, in winter it provides very economical supplementary heating. However, even reversible air conditioning is not covered by the 3% VAT rate in Luxembourg: the official housing-VAT list excludes air-conditioning systems.
Types of air conditioning systems in Luxembourg
| Type | Configuration | Ideal for | Total cost installed | Noise level |
|---|---|---|---|---|
| Portable unit | Wheeled unit + window hose | Emergency use, temporary solution | €200 – €1,200 | 50–65 dB (noisy) |
| Fixed monoblock | Built into the wall | Small apartment, single room | €1,700 – €2,950 | 40–50 dB |
| Reversible monosplit | 1 outdoor unit + 1 wall split | Living room, bedroom, office, studio | €2,600 – €4,550 | 19–25 dB (silent) |
| Reversible multisplit | 1 outdoor unit + 2 to 5 splits | Family apartment, house floor | €4,900 – €12,500 | 19–25 dB |
| Ducted | Unit in false ceiling + ducts | Whole house, new build | €9,650 – €25,000 | 25–35 dB |
Portable units starting at €200 are tempting, but they consume a lot of electricity, are very noisy (50 to 65 dB), and require an open window for the exhaust hose — drastically reducing efficiency. Not a long-term solution in Luxembourg.
Air conditioning prices in Luxembourg in 2026
Here are the average prices observed in Luxembourg in 2026, including equipment and installation. Prices may vary depending on brand, capacity and installation complexity.
| AC type | Equipment cost | Installation cost | Total cost |
|---|---|---|---|
| Portable unit | €200 – €1,200 | €0 (DIY) | €200 – €1,200 |
| Fixed monoblock | €910 – €1,700 | €790 – €1,250 | €1,700 – €2,950 |
| Reversible monosplit | €1,000 – €1,950 | €1,600 – €2,600 | €2,600 – €4,550 |
| Reversible bi-split | €2,300 – €3,650 | €2,600 – €3,950 | €4,900 – €7,600 |
| Reversible tri-split | €3,150 – €5,000 | €3,300 – €5,100 | €6,450 – €10,100 |
| Multisplit, 4–5 rooms | depends on the number of units | depends on the number of units | up to about €12,500 |
| Ducted | €5,100 – €13,650 | €4,550 – €11,350 | €9,650 – €25,000 |
Prices surveyed by renov.lu from partner installers in Luxembourg, September 2026, including 17% VAT. Rates vary by brand (Daikin, Mitsubishi Electric, Panasonic, LG, Toshiba), capacity and additional works. Extra costs and worked examples: installed air conditioning cost, item by item.
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Get my free quotes →How to choose the right air conditioning capacity?
A correctly sized air conditioner is essential: undersized, it will run constantly without reaching the desired temperature; oversized, it will cycle on and off frequently, reducing its lifespan and increasing consumption.
| Home type | Recommended cooling capacity | Example for 30 m² |
|---|---|---|
| Well insulated (NZEB standard, recent build) | 60 – 70 W/m² | 1.8 – 2.1 kW |
| Moderately insulated (2000s build) | 80 – 100 W/m² | 2.4 – 3 kW |
| Poorly insulated (older construction) | 100 – 120 W/m² | 3 – 3.6 kW |
For an average home in Luxembourg, use 100 W/m² as a starting point. A 60 m² apartment will need approximately 6 kW of cooling capacity for the entire surface.
Area (m²) × 100 W = Power in watts. For a 25 m² moderately insulated room: 25 × 100 = 2,500 W, i.e. a 2.5 kW unit. Your installer will adjust this based on sun exposure, ceiling height and window surface area.
Energy class: why it matters in Luxembourg
Luxembourg has high electricity rates. We recommend at least an A+ rated unit (ideally A++ or A+++). For an 80 m² apartment, the consumption difference between an A-rated and an A+++-rated system can represent around €300 to €400 in savings per year, quickly offsetting the higher purchase price.
Financial benefits for air conditioning in Luxembourg 2026
Unlike air-water or geothermal heat pumps, air conditioning (even reversible) is not eligible for Klimabonus. However, there are other significant financial advantages.
3% VAT — not guaranteed for air conditioning
In Luxembourg, VAT is normally 17%. Air conditioning, even reversible, is not covered by the 3% VAT rate: the official housing-VAT list excludes air-conditioning systems. Expect 17% unless the AED confirms otherwise in writing.
Electricity savings — up to 30%
An A++ or A+++ reversible air conditioner is 3 to 4 times more efficient than standard electric heating. Using your system in heating mode during winter can reduce your heating bill by 30% compared to electric radiators.
Property value increase
With increasingly frequent heatwaves, an air-conditioned home sells more easily and at a better price in Luxembourg. It’s an increasingly sought-after comfort criterion, especially in urban centres like Luxembourg City, Esch-sur-Alzette or Differdange.
The official housing-VAT list (guichet.lu) expressly excludes air-conditioning systems and wellness equipment; only the heating installation is listed. Air conditioning, even reversible, is therefore not covered by the 3% rate: expect 17% unless the AED confirms otherwise in writing — ask before signing.
Which air conditioning for my home in Luxembourg?
For a detached house
Houses in Luxembourg generally have a large surface area (over 120 m²) with many rooms. We recommend a multisplit system with 3 to 5 indoor units, allowing independent cooling of the living room, dining room and bedrooms. For a complete house, expect €6,450 to €10,100 for a tri-split and up to about €12,500 for a 4- or 5-room multisplit, or €9,650 to €25,000 for a premium ducted system.
For an apartment
In urban centres like Luxembourg City, Esch-sur-Alzette or Differdange, apartments are smaller and require more compact systems.
Studio or small apartment (< 50 m²)
A reversible monosplit — an air-to-air heat pump — in the main room (living room) is sufficient. Budget €2,600 to €4,550, installation included, i.e. on average €2,600–€2,950 per split. Recommended capacity: 2.5 to 3.5 kW.
Family apartment (70 – 120 m²)
A reversible bi-split or tri-split system. Budget €4,900 to €10,100. Consider ducted if you have false ceilings.
For a single room
To cool only a living room, choose a powerful wall unit (3.5 to 5 kW). For a bedroom, opt for a compact model with « night » mode (noise level below 20 dB, 2.5 kW capacity). Budget €2,600 to €4,550, installation included. To compare systems by floor area and type of home, see our guide to choosing the right type of air conditioning for your home.
Installing an outdoor unit on the façade requires authorisation from the general meeting of co-owners and, depending on the municipality, a declaration or a permit. Some co-ownerships impose restrictions on the number or placement of outdoor units. Check before starting your project.
Request a free quote now. Our verified installers cover all of Luxembourg.
Get my quotes →How does the installation process work?
Technical visit and assessment
The installer evaluates your home: surface area, insulation, exposure, number of rooms. They determine the required capacity and suitable system type. They check technical constraints (façade access, co-ownership rules, distance to neighbours).
Equipment selection and detailed quote
The installer provides a detailed quote including brand, model, cooling and heating capacity, unit placements and installation schedule.
Installation (½ day to 4 days)
For a monosplit: approximately ½ day. For a multisplit: 1 to 2 days. For ducted: 2 to 4 days. The installer drills through the façade, positions units, runs refrigerant lines and completes electrical connections.
Commissioning and testing
Leak testing of the circuit, pressure testing, verification of all functions (cooling, heating, dehumidification). Handover of the installation’s technical documents. The full sequence, from the site visit to commissioning, is set out in the air conditioning installation steps.
FAQ — Frequently asked questions about air conditioning in Luxembourg
How much does air conditioning installation cost in Luxembourg in 2026?
Prices vary by system type: €200 to €1,200 for a portable unit (no installation), €2,600 to €4,550 for an installed reversible monosplit (an air-to-air heat pump), €4,900 to €13,650 for a multisplit, and €9,650 to €25,000 for a premium ducted system. These prices include equipment and labour. The cost also depends on brand, capacity and installation complexity.
Are there grants for air conditioning in Luxembourg?
Air conditioning is not eligible for Klimabonus. Nor is it covered by the 3% VAT rate, even when reversible: the official housing-VAT list excludes air-conditioning systems. Expect 17% unless the AED confirms otherwise in writing.
What is the difference between monosplit and multisplit air conditioning?
A monosplit air conditioner has one outdoor unit connected to a single indoor unit — ideal for cooling one room (living room, bedroom or office). A multisplit system connects one outdoor unit to multiple indoor units (2 to 5), allowing independent cooling of different rooms with a single outdoor unit.
What air conditioning capacity should I choose in Luxembourg?
For an average home in Luxembourg, plan for 100 W/m². A 25 m² living room needs a 2.5 kW unit. Capacity may be lower (60 to 70 W/m²) for well-insulated homes built to the NZEB (nearly zero-energy building) standard, and higher (100 to 120 W/m²) for older buildings. Your installer will adjust based on sun exposure, ceiling height and window area.
Do I need permission to install air conditioning in Luxembourg?
For a detached house, your municipality’s regulations decide (exemption, declaration or permit), and the outdoor unit must meet the municipal noise limits (model regulation: 40 dB(A) at the boundary of the neighbouring building plot). In co-ownerships, a vote of the general meeting is required. Some municipalities regulate outdoor unit placement, especially in protected areas. Your installer will advise on the specific requirements for your situation.
Does reversible air conditioning work in Luxembourg winters?
Yes. Modern models operate down to −15°C in heating mode, with a COP (coefficient of performance) of 3 to 5 — 3 to 4 times more efficient than standard electric heating. It’s an excellent supplementary heating solution for Luxembourg winters, although a primary heating source is still recommended for extreme cold periods.
Which air conditioning brands are recommended in Luxembourg?
The most reliable brands distributed by Luxembourg professionals are Daikin, Mitsubishi Electric, Panasonic, LG and Toshiba. Choose these proven brands with at least a 5-year compressor warranty for lasting equipment and reliable after-sales service.
Why compare 3 quotes?
Three quotes are enough to compare prices, solutions and timelines without being swamped with calls: your request goes to 3 installers. They are professionals established in Luxembourg whose business permit has been checked, and they usually reply within 48 working hours. The service is free and without obligation: you remain free to accept none of the offers.