Heat pump installer in Luxembourg
Design, installation and commissioning of your air-to-water heat pump
Ecoclima supports homeowners and building owners across Luxembourg with their air-to-water heat pump projects. We assess the existing heating system, size the solution, carry out the installation and commission the complete system.
- On-site assessment
- Building, existing heating system, heat emitters, hot water requirements and location.
- Coordinated installation
- Heat pump, hydraulics, controls and electrical adaptations specified in the quotation.
- Local support
- Applicable grants, technical documents, commissioning and installation inspection.
A local company based in Munsbach. Ecoclima works throughout the Grand Duchy and has more than five years of expertise and over 1,000 buildings equipped across all its energy solutions.
Meet the Ecoclima teamHeat pump sizing
Output calculated for your building, not selected by floor area
An air-to-water heat pump extracts heat from the outdoor air and uses it to warm the water circulating through radiators or underfloor heating. Depending on the selected configuration, it can also produce domestic hot water.
For consistent operation, the unit must cover the building’s heating requirements without being unnecessarily oversized. The water temperature required by the heat emitters directly affects efficiency and electricity consumption.
Our method: we start with the building’s heat loss, then check the output of the heat emitters, flow temperature, domestic hot water requirements, the unit’s modulation range and any backup heating required.
Understand how a heat pump is sized
- Building
- Heated area, insulation, glazing, ventilation and heat loss.
- Existing heating
- Energy source, known consumption, flow temperature and controls.
- Heat emitters
- Radiators or underfloor heating, available output and required flow rates.
- Hot water
- Number of occupants, usage, storage volume and expected comfort.
- Location
- Access, electrical supply, pipe routes, noise and neighbouring properties.
The Ecoclima heat pump assessment
We confirm feasibility before selecting the unit
Two homes with the same floor area can require different solutions. Before preparing the quotation, our assessment brings together the heating demand, existing equipment, site constraints and your renovation plans.
What we assess
- The building’s heating demand and thermal characteristics.
- The heating system being replaced, available consumption data and hot water production.
- Radiators or underfloor heating, operating temperatures and the hydraulic circuit.
- The electrical panel, available power and any required adaptations.
- Possible locations for the units and acoustic constraints.
- The technical grant conditions that may apply to the project.
What our proposal includes
- The selected output and the information used to determine it.
- References for the heat pump, hydraulic module, cylinder and controls.
- Included hydraulic and electrical work or heat-emitter adaptations.
- Relevant performance data, sound level and stated warranties.
- An itemised price, estimated grants and any optional items.
- Project stages, required documents and each party’s responsibilities.
Heat pumps for renovation projects
Older homes and radiators: we check compatibility before installation
Underfloor heating is not essential. Existing radiators can be retained when they deliver enough heat at a water temperature compatible with the heat pump.
The presence of radiators alone neither confirms nor rules out the project. We compare each room’s heating demand with the actual output of its emitters and identify any useful adaptations before you commit.
A direct installation may be possible if…
- The building’s heating demand is suitable.
- The underfloor heating or radiators operate at an appropriate water temperature.
- The hydraulic circuit can provide the required flow rates.
- A suitable outdoor location is available.
Our assessment may identify adaptations
- Replacing or adding selected radiators in rooms with the highest demand.
- Adjusting flow rates, hydraulic balancing or modifying the pipework.
- Adapting the cylinder, hot water production or electrical supply.
- Prior work on the building where heat loss is too high.
Heat pump prices in Luxembourg
A quotation for the complete installation, not just the unit
The price of an air-to-water heat pump depends on the heating demand, required output, hot water production, existing pipework, electrical adaptations, equipment location and the heating system to be removed. An estimate based solely on the home’s floor area would be too imprecise.
What affects the price
- Heat pump output and modulation range.
- Hot water cylinder, hydraulic module and controls.
- Adaptations to radiators, pipework, circulation pumps or buffer tank.
- Electrical work, site access and connection lengths.
- Removal of the existing heating system and, where applicable, decommissioning an oil tank.
What we price before you decide
- The equipment and work included in the installation.
- Essential adaptations and separately priced options.
- Estimated Klimabonus grants based on the available information.
- The stages through to commissioning and inspection.
- Any assumptions that could change the final price.
To prepare an initial estimate: send us the project address, heated area, existing heating system, recent consumption figures and a few photos of the radiators, plant room and possible outdoor locations.
Installation by Ecoclima
Your project, from the first visit to commissioning
The overall timescale varies according to the adaptations required, applicable procedures and equipment availability. We present every planned stage before the project begins.
- Initial discussionWe gather information about the building, existing heating system, energy consumption and your objectives.
- Technical visitWe examine the heat emitters, hydraulics, electrical system, access and possible equipment locations.
- Assessment and quotationWe present the solution, included work, price, estimated grants and the assumptions used.
- PreparationWe organise the equipment, technical information and documents relating to our work.
- InstallationOur technicians complete the planned hydraulic and electrical connections, then install the controls.
- CommissioningWe test operation, configure the system, explain how to use it and coordinate the inspection.
2026 heat pump grants
We check which Klimabonus grants apply to your project
In 2026, an air-to-water heat pump installed in an existing single-family house may qualify for a basic grant of €10,000 when it replaces a fossil-fuel boiler or direct electric heating, or €6,000 without this replacement. A temporary additional grant of €2,000 may apply to eligible projects ordered during the specified period.
- Up to €12,000 for an existing single-family house when a fossil-fuel boiler or direct electric heating system is replaced at the same time.
- Up to €8,000 for an existing single-family house without the replacement required for the higher grant level.
- €3,000 for an air-to-water heat pump in a new single-family house. The temporary additional grant applies to existing buildings.
- 50% of actual costs, capped at €2,000, to adapt the heat distribution system in a single-family house, plus €1,500 for the removal or neutralisation of an oil tank, subject to conditions.
Technical eligibility: the air-to-water heat pump must achieve a COP of at least 3.1 at A7/W35. The project must also comply with electrical and thermal metering, hydraulic balancing and acoustic requirements. In an existing building, a buffer tank of at least 30 litres per kW of thermal output is required unless the heat pump is modulating. We check these points when designing the installation.
Key dates: the additional €2,000 grant applies to eligible heat pumps installed in an existing residential building and ordered between 1st January 2026 and 30 June 2027. Pre-financing is scheduled to begin on 1st January 2027. It will remain optional and will not increase the amount of the grant.
How we support you
- We identify the grants that may apply to your configuration.
- We incorporate the main technical criteria into the proposed solution.
- We prepare the technical data sheets and information relating to our installation.
- After commissioning, we coordinate the inspection request to be submitted within the statutory one-month deadline.
- We assist you in preparing the grant application.
What we will ask you to provide
- Information about the property and the heating system being replaced.
- The supporting documents and signatures required for the application.
- The dated order and any documents that must be retained.
- Any required municipal or co-ownership authorisations.
- Your choice between the standard application and pre-financing once it becomes available.
Official information: 2026 Klimabonus grant amounts and technical conditions and the Klimabonus Wunnen 2026–2030 scheme announcement. Final eligibility and the amount awarded are determined by the administration according to the building, the heating system being replaced, the documents submitted and compliance with all conditions.
Equipment and controls
We design a complete system around the heat pump
The outdoor unit is only one part of the installation. Comfort and energy consumption also depend on the hydraulic module, cylinder, circulation pumps, controls, heat emitters, electrical protection and system settings.
Our quotation identifies the proposed products, their performance under relevant operating conditions, sound level, warranties, accessories and control functions.
- Outdoor unit
- Output at different outdoor temperatures, modulation, refrigerant and acoustic performance.
- Hydraulics
- Indoor module, circulation pumps, possible backup heating, buffer tank and connections.
- Domestic hot water
- Cylinder volume, number of occupants, temperature and production strategy.
- Radiators or underfloor heating
- Temperatures, flow rates, balancing and planned adaptations in each room.
- Controls and monitoring
- Weather-compensated control, sensors, scheduling, electricity metering and heat meter.
We select the specific unit after assessing the building. Excellent technical specifications cannot compensate for an oversized unit, unsuitable hydraulics or an unnecessarily high water temperature.
Manufacturers offered by Ecoclima
We compare products compatible with the required output, temperatures, hydraulics, location and expected functions. The selected brand and model are clearly stated in your quotation.
Why choose Ecoclima?
A local partner coordinating heating, hydraulics and electrical work
A heat pump must work with the entire building. Our experience in heating, electricity, solar PV and energy management helps us anticipate how the equipment interacts instead of treating each component separately.
An established team in Luxembourg
- A company based in Luxembourg.
- Service throughout the Grand Duchy.
- Dedicated contacts for advice, technical matters, operations and administration.
- More than five years of expertise and over 1,000 buildings equipped across all services.
A clear project before work begins
- A solution selected after assessing the building.
- Equipment references and work clearly identified in the quotation.
- Coordination of the planned hydraulic, electrical and administrative elements.
- System settings and operating guidance provided at commissioning.
Ecoclima projects
Heat pump installations completed in Luxembourg
Installation quality can also be seen in the plant room: accessible connections, insulated pipework, controlled flow rates, organised controls and neatly installed components.
Explore our selection of completed projects to see the equipment, connections and standard of finish in our Luxembourg installations.
Frequently asked questions
Ecoclima answers your questions about heat pumps in Luxembourg
What is the difference between an air-to-water and an air-to-air heat pump?
An air-to-water heat pump heats the water in a central heating circuit and can supply radiators, underfloor heating and domestic hot water, depending on the configuration. An air-to-air heat pump heats or cools room air directly through indoor units; it does not replace a wet central heating system in the same way.
How does an air-to-water heat pump work?
It captures heat from the outdoor air, raises its temperature through a refrigerant circuit and transfers this energy to the heating water. Its efficiency depends in particular on the outdoor temperature and the water temperature required by the building.
Can a heat pump be installed in an older home with radiators?
Yes, in some buildings, but an assessment is essential. Ecoclima analyses heat loss, the required water temperature and radiator output. The project may be feasible without changes, with selected radiators adapted, or after certain improvements to the building.
How does Ecoclima select the heat pump output?
We start with the building’s heating requirements and compare them with the unit’s available output under the expected winter conditions. We then check its modulation range, heat emitters, domestic hot water requirements and whether backup heating may be needed.
How much does a heat pump cost in Luxembourg?
The price depends on the required output, domestic hot water, existing hydraulics, radiators, electrical work, access and the heating system to be removed. Ecoclima prepares a quotation after assessing the building, clearly separating the main installation, required adaptations, options and estimated grants.
How much can you save with a heat pump?
No single percentage applies to every home. The result depends on the heat demand, previous heating system, seasonal efficiency, water temperature, energy prices and system settings. A credible estimate must therefore be calculated from your specific situation, without promising a fixed saving.
What grants are available for a heat pump in 2026?
For an existing single-family house, the basic grant for an air-to-water heat pump is €10,000 when a fossil-fuel boiler or direct electric heating is replaced, and €6,000 without this replacement. A temporary additional grant of €2,000 can increase the total to €12,000 or €8,000 for an eligible project ordered between 1st January 2026 and 30 June 2027. Pre-financing is scheduled to begin on 1st January 2027.
Is an air-to-water heat pump noisy?
The outdoor unit produces fan and compressor noise. Before installation, Ecoclima considers the model, its sound power level, location, obstacles, vibration and neighbouring properties.
How long does it take to install a heat pump?
The installation time depends on the heating system being replaced, hydraulic modifications, domestic hot water, radiators, electrical work and site access. The schedule provided by Ecoclima also allows for preparation, commissioning and inspection.
Can a heat pump be combined with solar panels?
Yes. Solar PV can cover part of the electricity used by the heat pump, but the two profiles do not always coincide: solar production is higher in summer, while heating demand is concentrated in winter. Ecoclima assesses both systems together to avoid sizing them around unrealistic self-consumption assumptions.
Does Ecoclima work throughout Luxembourg?
Yes. Ecoclima is based in Munsbach and works throughout the Grand Duchy. The technical visit confirms access, building constraints, equipment locations and the procedures applicable to the project.
Explore your project in more detail
Our guides to heat pumps in Luxembourg
- Luxembourg heat pump guide 2026Sizing, renovation, radiators, grants and points to check.
- Additional €2,000 heat pump grantConditions, dates and how the pre-financing planned for 2027 will work.
- Air-to-air or air-to-water heat pumpChoose the technology suited to central heating or room-by-room comfort.
- Heat pump and solar PVUnderstand consumption, solar production and how the two systems genuinely complement one another.
Your heat pump project
Request an assessment tailored to your building in Luxembourg
Send us the project address, heated area, existing heating system and any available consumption figures. Photos of the radiators, plant room and possible outdoor locations will help us prepare the first discussion more effectively.
Ecoclima
Heat pump installer in Luxembourg
L-5366 Munsbach, Luxembourg