Energy renovation work in Charleroi

Our energy renovation services

–  Insulation of attics, walls, floors, and roofs

–  Replacement of frames, windows, and sliding doors

–  Installation of boilers, heat pumps, and water heaters

–  Installation of solar panels and air conditioning systems

–  Preliminary energy audit with prioritization of items

Process of an energy renovation project

The initial energy audit identifies the main sources of heat loss and prioritizes interventions based on their actual cost-benefit ratio, rather than a standard order applied systematically.

The insulation of the envelope is generally treated as a priority, before replacing heating equipment, to properly size the new installation according to the reduced needs of the building.

A complete project spans several weeks depending on the number of items addressed, with coordination among the various trades involved.

Insulation or heating replacement: which is the priority?

Installing a high-performance boiler or heat pump in a poorly insulated house is like heating a home that loses heat almost as quickly as it is produced. The investment in new equipment then loses a significant part of its actual efficiency.

Conversely, insulating a house without reviewing an oversized or outdated heating system leaves some potential savings on the table. The ideal is to address both aspects in a coherent order: first reduce needs, then size the new equipment accordingly.

A high-performance water heater often complements this type of project, especially in households where hot water consumption represents a significant portion of the annual energy bill.

Replacing frames to enhance insulation

Old windows and sliding doors, often with single or old double glazing, represent a significant source of thermal loss in buildings constructed in Charleroi before the 1990s.

Replacing them with high-energy-performance frames significantly reduces heat loss while improving acoustic insulation, a valuable advantage in busier streets of the urban center.

Good roof insulation, possibly complemented by high-performance roof windows or a new insulated front door, closes the last often overlooked link in the building's thermal envelope.

Air Conditioning and Summer Comfort

Energy renovation is not limited to winter heating. Increasingly hot summers make air conditioning relevant in certain homes, especially under poorly insulated roofs where heat accumulates quickly during the day.

A reversible heat pump can combine both functions, heating in winter and cooling in summer, which limits the number of distinct equipment to install and maintain in the long term, while simplifying the annual maintenance of the system.

Grants and Assistance in Wallonia

The Walloon housing grants cover insulation, window frame replacement, and the installation of certain high-performance heating systems, with amounts varying according to household income and the type of work carried out.

The 6% VAT applies to most of these works in homes over ten years old, and heat pumps benefit from this reduced rate even in newer homes, temporarily, as a measure intended to accelerate their adoption.

Where to Start and Equipment Compatibility

Insulating the building envelope is generally the priority for starting an energy renovation, before replacing heating equipment, to avoid oversizing the new installation. Most homes can accommodate a heat pump, provided that the insulation is sufficient and that the outdoor space allows for the installation of the unit, a point that is systematically checked during the technical visit. Combining solar panels and a heat pump is even an increasingly common combination: the panels produce part of the electricity consumed by the heat pump, further reducing the household's overall energy bill.

Amortization, Grants, and Preliminary Audit

The amortization of an energy renovation varies from five to fifteen years depending on the items addressed and the grants obtained, with an immediate comfort gain right after the work is completed, well before the full financial amortization is reached. The grants do not cover all the work: they cover part of the cost according to ceilings and income conditions, with the remaining costs depending on the type of work and the household profile, and the Rénopack can supplement the financing for eligible households. A preliminary energy audit is sometimes required to obtain certain grants, especially for comprehensive renovation files targeted by the reform of October 2026, and is useful in any case to prioritize the work and avoid poorly targeted investments.

Reduce Your Energy Bills This Winter

A free energy audit allows you to identify the most profitable areas before any commitment, with a quote that directly incorporates the available grants for your situation.

We operate in all sections of Charleroi, with particular attention to brick worker houses that often combine several energy weaknesses at once.

In Gilly as elsewhere in the city, the most visible gain often remains that of the first winter following the work: a significantly reduced bill, transformed indoor comfort, and a home better valued for the future.

Homeowners who are still hesitating between several areas benefit from starting with the free audit: it allows for an objective comparison of the cost-benefit ratio of each intervention before committing to a specific budget.