Impact of the new 2025 standards on winter renovations in Belgium

Belgium implemented strict rules for heating systems in 2025 to reduce CO₂ emissions and improve energy efficiency. These changes directly affect winter renovations, particularly for oil boilers and stoves. For individuals, anticipating these new standards is essential to avoid additional costs.

Gradual ban on oil boilers

Brussels: end of new installations since June 2025

Since June 1, 2025, the installation of oil boilers in Brussels is prohibited, even for replacements. This measure aims to limit CO₂ and fine particle emissions in the capital. Homeowners must quickly turn to more eco-friendly alternatives such as natural gas condensing boilers, heat pumps, or hybrid systems.

Wallonia: restrictions for new and existing buildings

In Wallonia, new constructions can no longer include oil boilers since March 1, 2025. For existing buildings, the replacement of oil boilers will be prohibited starting January 1, 2026.

Wood stoves and boilers: ecological standards mandatory

Since January 1, 2025, only wood stoves and boilers compliant with European directive 2009/125 can be installed. Non-compliant or second-hand devices are prohibited. These standards ensure better energy efficiency and reduce fine particle emissions, contributing to a healthier living environment.

Mandatory insulation of heating ducts

All heating installations with temperatures exceeding 35°C and ducts larger than 20 mm located outside heated spaces must be insulated by December 31, 2025. This requirement helps reduce heat loss, improve energy efficiency, and lower heating bills. For homeowners, insulation represents a quickly recouped investment through energy savings.

Financial aid and tax incentives

To facilitate the transition to heating systems compliant with the new standards, grants and tax incentives are available for individuals. These aids help reduce the cost of winter renovations while encouraging the adoption of sustainable solutions. Some grants concern the replacement of oil boilers, the installation of high-efficiency boilers, or the insulation of ducts.

The main aids:

Replacement of an oil boiler
Individuals can receive up to €3,000, depending on the region. To benefit, the boiler must be new and compliant with standards, and the installation must be carried out by a certified professional.

Installation of a high-efficiency boiler
This aid can cover up to 30% of the cost of the work. It only applies to certified models and work carried out by a professional.

Insulation of heating ducts
For ducts larger than 20 mm located outside heated rooms, this aid can cover up to 50% of the cost, depending on the region. Again, the installation must be done by a certified professional.

Before starting your work, check your eligibility, consult a certified professional, and keep all your invoices to obtain the aids.

Conclusion: anticipate to succeed in your winter renovations

The new 2025 standards in Belgium are transforming how heating systems are installed and maintained. Individuals must act quickly to ensure effective, compliant, and sustainable winter renovations. Avenir Rénovations supports its clients in this transition, with solutions tailored to current legal and energy requirements.

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