Heat Pumps Luxembourg 2026 : Daikin vs Mitsubishi vs Vaillant — Brand Comparison
Table of contents (5)
Klimabonus Wunnen 2026 : Luxembourg's Heat Pump Grant
Since 4 January 2026, the Klimabonus Wunnen has replaced PRIMe House. The subsidy is deducted directly from the installer's invoice (third-party payment), so you only pay the net amount.
| Klimabonus Heat Pump Grant 2026 | Amount |
|---|---|
| Air-to-water HP (replacing fossil/electric boiler) | Up to €10,000 |
| Air-to-water HP (new install, no fossil replacement) | Up to €6,000 |
| New construction | €3,000 |
| Geothermal HP (replacing fossil/electric boiler) | Up to €12,000 |
| Low-income households (doubled) | Up to €20,000 / €24,000 |
| Reduced VAT | 3% instead of 17% |
| Enoprimes (Creos/Enovos grid) | €1,000–2,000 |
| Klimapret (subsidised loan) | Up to €100,000 |
Heat Pump Brand Comparison for Luxembourg
| Brand | Key Model | COP/SCOP | Capacity | Warranty | Key Strengths |
|---|---|---|---|---|---|
| Daikin | Altherma 3 H HT | COP 4.2 / SCOP 4.0 | 4–16 kW | 5 yr (ext. 10) | World leader, extreme cold operation (-25°C) |
| Mitsubishi Electric | Ecodan PUHZ-SW | COP 4.3 / SCOP 4.1 | 5–14 kW | 5 yr (ext. 12) | Advanced inverter, whisper-quiet, top reliability |
| Vaillant | aroTHERM plus | COP 4.5 / SCOP 4.3 | 5–15 kW | 5 yr (ext. 10) | Europe's #1 brand, R-290 natural refrigerant |
| Viessmann | Vitocal 250-A | COP 4.4 / SCOP 4.2 | 6–18 kW | 5 yr (ext. 10) | German premium quality, high-temperature option |
| Atlantic | Alféa Extensa Duo+ | COP 3.9 / SCOP 3.7 | 6–14 kW | 5 yr | Best value for money, reliable French brand |
| Bosch Thermotechnik | Compress 7000i AW | COP 4.1 / SCOP 3.9 | 5–17 kW | 5 yr (ext. 10) | German reliability, strong after-sales network in LU |
Heat Pump Prices in Luxembourg 2026
| HP Type | Installed price (excl. VAT) | After Klimabonus | Avg COP |
|---|---|---|---|
| Air-to-water (monoblock) | €15,000–22,000 | €9,000–16,000 | 3.5–4.3 |
| Air-to-water (split) | €13,000–18,000 | €7,000–12,000 | 3.8–4.5 |
| Geothermal (boreholes) | €28,000–45,000 | €18,000–35,000 | 4.5–5.5 |
| Air-to-air (heating + cooling) | €4,000–9,000 | €2,000–5,000 | 3.5–5.0 |
Luxembourg prices are 15–20% higher than in Belgium. VAT: 3% super-reduced rate for buildings over 2 years old.
Which Brand is Right for You?
- Maximum reliability: Mitsubishi Electric Ecodan or Daikin Altherma — top after-sales in Luxembourg
- Best environmental performance: Vaillant aroTHERM plus (natural R-290 refrigerant, SCOP 4.3)
- Best value: Atlantic Alféa Extensa — excellent price-to-performance ratio
- High temperature (existing radiators): Viessmann Vitocal 250-A (up to 75°C)
Get Free Quotes from Certified Installers
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Frequently asked questions
Daikin (Altherma 3) and Mitsubishi Electric (Ecodan) lead in reliability and after-sales service. Vaillant (aroTHERM plus) excels in environmental performance with natural R-290 refrigerant. Viessmann is ideal for high-temperature operation. Atlantic offers the best value for money.
The Klimabonus Wunnen 2026 offers up to €10,000 for an air-to-water HP replacing a fossil/electric boiler, up to €6,000 for a new install (no fossil replacement), and up to €12,000 for a geothermal HP. Low-income households may receive up to €20,000–€24,000. VAT is reduced to 3%.
An air-to-water heat pump costs €15,000–22,000 installed (excl. VAT), around €9,000–16,000 after Klimabonus. A geothermal HP costs €28,000–45,000 gross. Prices are 15–20% higher than in Belgium.
Yes. Modern heat pumps (Daikin, Mitsubishi) operate down to -25°C. COP decreases in cold weather but remains positive. A geothermal HP is unaffected by outdoor temperatures (ground stays constant at 10–12°C).
Yes, especially with high-temperature models (Viessmann Vitocal up to 75°C, Daikin Altherma H HT). For low-temperature HPs (45–55°C), radiators may need to be oversized or replaced. A thermal audit is recommended first.
Data verified in April 2026
Référence visuelle
