Klimabonus 2026 · Heat Pump

Heat Pump Subsidies in Luxembourg

Up to €12,000 depending on the heat pump type (air-water, geothermal, DHW). Discover exact amounts per technology, conditions, and procedures.

Heat Pump Subsidies Overview

Klimabonus 2026 provides substantial premiums for replacing fossil heating systems with heat pumps. Amounts vary by technology and capacity.

Air-water HP: up to €6,000

Geothermal HP: up to €12,000

DHW heat pump: up to €1,500

Reduced 3% VAT

Zero-interest Klimaprêt up to €50,000

Additional bonus for oil boiler replacement

Klimabonus 2026 Premium Scale, Heat Pumps

HP Type	Base Premium	Oil Replacement Bonus	Maximum Premium
Air-water	€4,000	+ €2,000	€6,000
Geothermal (brine-water / water-water)	€8,000	+ €4,000	€12,000
Domestic hot water (DHW)	€500	+ €1,000	€1,500
Air-air (reversible AC)	Not eligible	,	,

Eligibility Conditions

Existing building (> 2 years)

Building must be completed for at least 2 years.

Fossil heating replacement

Additional bonus if HP replaces oil, gas, or coal heating.

Certified installer

Installation by an authorised professional in Luxembourg.

Minimum COP

Minimum COP of 3.0 (air-water) or 4.0 (geothermal) per EN 14511.

Eco-friendly refrigerant

HP with low GWP (< 750) receive priority processing.

Proper sizing

Capacity must match heating needs, certified by a professional heat loss calculation.

Application Process

Energy assessment

Get a heat demand calculation for your home.

Get quotes

Compare at least 3 detailed quotes from certified installers.

Submit application

Apply on MyGuichet.lu BEFORE work starts.

Installation & commissioning

After approval, have the HP installed and commissioned.

Submit documentation

Send final invoices and commissioning report.

Receive premium

Payment within 6-10 weeks after full verification.

Additional Benefits

3% VAT

Reduced rate on the complete installation.

Klimaprêt

Zero-interest loan up to €50,000, 15-year term.

Heating savings

40-70% lower heating costs compared to oil or gas.

Energy passport

Improved energy class and increased property value.

FAQ

Which HP for Luxembourg?

Air-water HPs are most common with good value. Geothermal HPs are more efficient but require drilling.

Does a HP work in extreme cold?

Yes, modern HPs work efficiently down to -20°C.

Can I keep existing radiators?

HPs work best with low-temperature emitters but existing radiators can often be reused.

Noise levels?

Modern outdoor units: 35-50 dB(A). Luxembourg regulations govern distances and noise limits.

Combinable with solar?

Yes. Up to €12,000 HP + €10,000 PV + €2,250 battery = potentially €24,250.

Lifespan?

15-20 years with regular maintenance.

⚠️ Disclaimer: Information provided for guidance only. Amounts and conditions may change. Please consult official sources (Klima-Agence, MyGuichet.lu) for current data. Last updated: April 2026.