Why choose Avenir Renovations?
When should you replace or install a new boiler?
In many Belgian households, the boiler is no longer suitable for current needs or performance standards.
An outdated or inefficient boiler
Boilers installed more than 15 years ago often have efficiencies below 70%. They consume more, heat less quickly, and are often sources of breakdowns or noise. This results in high bills, increased hot water consumption, and constant discomfort.
Obsolescence can also pose safety issues, particularly in the event of regulation malfunctions, leaks, or poor smoke evacuation. Renovation allows for securing the installation and ensuring its reliable operation.
An incompatibility with current standards
Old generation boilers no longer meet the requirements of the energy performance certificate (PEB). In the event of resale or rental, this significantly devalues the property. Some oil boilers are even banned from installation in certain municipalities or by 2030.
Replacing the boiler then becomes an essential step in any overall energy renovation or when bringing a rental property up to standard.
A heating system poorly adapted to the housing
Changing room organization, adding insulation, installing low-temperature radiators: all these developments require a better-sized boiler or one compatible with modern hydraulic circuits.
It is important to choose a model capable of ensuring rapid temperature rise, a good balance between rooms, and compatibility with hot water production equipment.
How to choose the right boiler model for your home?
Replacing your boiler is much more than just changing the appliance. It involves optimizing the entire heating system, from the generator to the control.
Installation and maintenance: what you need to know for a durable boiler
Changing your boiler with Avenir Rénovations means benefiting from comprehensive technical and administrative support provided by certified professionals.
Before any intervention, we analyze the situation of your home: area to be heated, number of occupants, type of radiators, existing insulation… This allows us to propose suitable equipment, neither undersized nor oversized.
We also incorporate data from the PEB certificate, hot water needs, smoke evacuation conditions, and space constraints.
Our certified heating engineers ensure complete installation, connection, regulation, and commissioning tests. All work is covered by a ten-year warranty and complies with regional requirements.
We ensure compliance with ventilation standards, safety distances, electrical connections, and the quality of the hydraulic circuit.
We select models that allow you to benefit from regional financial assistance. We assist you in compiling the application, administrative follow-up, and necessary declarations.
This allows you to significantly reduce the initial investment cost while increasing long-term energy profitability.
Cost of boiler replacement in Belgium
| Type of boiler | Average price including VAT (supplied/installed) |
| Condensing gas boiler | 3,000 to 5,500 € |
| Pellet boiler (biomass) | 7,000 to 12,000 € |
| Hybrid system (heat pump + gas) | 9,000 to 14,000 € |
Prices vary according to power, existing configuration, technical constraints, and options (hot water tank, control, silo...). A customized quote is provided after a site visit.
FAQ – boiler replacement in Belgium
How long does it take to replace a boiler?
Generally, 1 to 3 days are needed to dismantle the old boiler, install the new one, connect the circuits, and perform tests. If circuit or evacuation adaptations are necessary, this timeframe may extend by an additional 1 to 2 days.
We provide you with a detailed schedule before the start of the work to ensure a quick and well-organized intervention.
What are the advantages of a condensing boiler?
It consumes less, heats more efficiently, is better for the environment, and reduces greenhouse gas emissions. It is currently the best compromise between performance, price, and ease of maintenance.
It easily integrates into existing installations while significantly improving the energy class of the housing.
Can I receive assistance to change my boiler?
Yes, in Walloon Region as well as in Brussels. The amounts vary according to:
- The type of boiler installed
- Your income (household category)
- The prior audit conducted or not
We help you obtain all the grants you are entitled to. Some aids can cover up to 70% of the total cost in certain situations.
Upgrade to a more efficient boiler with Avenir Rénovations
Don't let an old boiler compromise your comfort and bills. Trust Avenir Rénovations for its replacement and enjoy reliable, economical, and sustainable heating.
Contact us for a free visit and a quote tailored to your home. Together, let's build a high-performance heating system ready for the future.
