Energy renovation works in Luxembourg

What our support covers

• Comprehensive energy diagnosis of the property
• Insulation of attics, walls, and floors
• Boiler replacement or heat pump installation
• Installation of photovoltaic solar panels
• Implementation of controlled mechanical ventilation

Process of an energy renovation project

The energy audit identifies priority areas before the estimate directly incorporates the available aids, for a clear net budget from the first proposal.

Insulation work is generally addressed first, before replacing the heating system, to avoid oversizing equipment that would become overpowered once insulation is improved.

A final check verifies the consistency of the entire system, including insulation and heating, to ensure that the announced performance is actually experienced in use.

Errors to avoid in energy renovation

Focusing on a single area of work

Replacing only the heating without addressing insulation, or vice versa, yields disappointing results compared to a comprehensive approach that addresses both together in a coherent order.

Neglecting ventilation

Enhanced insulation without appropriate ventilation promotes condensation and indoor humidity, a problem that may not have existed before the work and can degrade the building over time.

Choosing improperly sized equipment

An oversized heat pump relative to the actual needs of the home operates less efficiently and more noisily than a model properly calibrated according to the thermal diagnosis.

Intervention areas in Luxembourg City

• Beggen, Dommeldange: old houses to be prioritized for insulation
• Belair, Merl, Limpertsberg: villas with high savings potential
• Bonnevoie: terraced housing, suitable interior insulation
• Kirchberg, Gasperich: targeted adjustments on recent buildings

Klimabonus, VAT, and aid in Luxembourg

The Luxembourg aid system was significantly simplified in 2026: no more complex calculations based on the power of installations, replaced by fixed amounts expressed in euros per square meter or per equipment, with additional bonuses for certified ecological materials containing a portion of recycled material.

The Klimabonus 2026 scheme sets aid amounts per square meter or per installed equipment, with possible accumulation with Enoprimes bonuses from energy suppliers and certain municipal subsidies representing up to half of the state aid.

A household with modest income can also benefit from a doubling of the bonus through the social Topup mechanism, in addition to the super-reduced VAT of 3% applicable to homes over ten years old.

Why choose Avenir Rénovations for your energy renovation

Energy renovation combines technical, financial, and administrative challenges that far exceed the simple choice of an insulator or a boiler. A structured support, from the initial diagnosis to the finalized aid application, avoids costly mistakes later on.

A certified expertise in energy efficiency

Our teams master all current solutions, from bio-sourced insulation to next-generation heat pumps, to objectively recommend the best combination according to your home and available budget.

A complete administrative support

We prepare the Klimabonus aid application files and check the eligibility of each item before the work, to secure the financing of your project and avoid late refusals.

Personalized solutions according to your home

Each building has a different energy profile: we adapt priorities according to the actual losses observed during the diagnosis, not according to a standard scheme applied systematically to all projects.

Preliminary Diagnosis and Long-Term Profitability

A pre-work diagnosis is not legally mandatory in all cases, but it is highly recommended: it prevents addressing a secondary issue before a priority one, a common mistake among homeowners who proceed without prior study. Constantly rising heating bills, cold walls to the touch, recurring condensation on windows: these signs justify a comprehensive energy diagnosis before any work decisions. In almost all cases, a well-prioritized energy renovation remains profitable in the long term: the cumulative energy savings over ten to fifteen years far exceed the remaining costs after deducting the mobilized aids, not to mention the added value upon resale.

Cumulative Klimabonus Aids

The various components of the Klimabonus can be combined with energy supplier bonuses and municipal aids, within the limits set for each type of work. Administrative support allows for checking, case by case, which components are actually available for your home before finalizing the estimate.

Sustainably Reduce Your Bills with Avenir Rénovations

A well-prioritized energy renovation significantly changes the daily life of a household, providing regained comfort and reduced bills from the first winter following the work, without waiting years to see the effects.

Our teams operate throughout Luxembourg City, offering a free energy audit that precisely identifies where to concentrate your budget for maximum impact, always prioritizing the most profitable aspect first.

Energy renovation remains a major challenge for the capital: an aging real estate stock, constantly rising energy prices, and increasingly ambitious national climate goals converge towards the same conclusion, which is to accelerate the renovation of existing buildings rather than settling for new construction, which has already been largely regulated by strict energy standards for several years.