What grants are available for your heating work in 2025?

What grants are available for your heating work in 2025?

Replacing an old heating system is one of the most effective levers to improve the energy performance of a home. In Belgium, both in Brussels and Wallonia, the Regions strongly encourage homeowners to modernize their installations, particularly by replacing old energy-consuming boilers with more efficient and environmentally friendly systems.

Heat pumps, biomass boilers, solar water heaters, or pellet stoves: many technologies are today eligible for substantial grants, provided certain criteria are met. This page presents all the heating aids available in 2025, the amounts, the technical conditions to be met, as well as the steps to follow. You will also discover how Avenir Rénovations supports you in securing your project.

Why replace your heating system?

An outdated heating system consumes more energy, costs more to operate, and emits more CO₂. By replacing it with modern equipment, you:

  • Reduce your heating bills
  • Improve your comfort in winter
  • Decrease your environmental impact
  • Enhance the value of your home
  • Gain reliability and safety

This is why public authorities provide significant financial assistance for these investments, particularly as part of the energy transition.

What technologies are eligible for grants in 2025?

The main heating installations covered by the grants are:

  • Air/water, ground/water, or hybrid heat pumps
  • Biomass boilers (wood, pellets)
  • High-performance pellet or wood stoves
  • Solar water heaters
  • Improvement of control systems (thermostats, thermostatic valves)
  • Insulation of pipes and storage tanks

Heating grants in Wallonia

General conditions

  • The home must be located in Wallonia and built more than 15 years ago
  • A housing audit is mandatory for most equipment
  • The installation must be carried out by a contractor registered with the BCE
  • The equipment must be listed on the recognized equipment list by the Region

Indicative amounts 2025

Type of equipment Base grant (R5) Max grant (R1)
Combined heating heat pump 600 € 3,600 €
Sanitary hot water heat pump 280 € 1,680 €
Biomass boiler 720 € 4,320 €
Local biomass stove 160 € 960 €
Solar water heater 420 € 2,520 €
Double flow ventilation 680 € 4,080 €

In addition, there are grants for:

  • Insulation of pipes: up to 204 €
  • Variable speed circulators: up to 456 €
  • Insulation or replacement of tanks: up to 432 €
  • Thermostatic valves and thermostats: up to 120 €

The amounts are increased based on your income category (R1 to R4). People in category R1 can receive up to 6 times the base grant.

Concrete example

Replacement of an oil boiler with a heat pump + thermodynamic water heater:

  • Total grant R2 (multiplier x4): 2,400 € (heat pump) + 1,120 € (water heater) = 3,520 €
  • 6% VAT applicable
  • Rénopack credit possible to finance the work

Heating grants in Brussels (RENOLUTION)

General conditions

  • The home must be at least 10 years old
  • The installation must be carried out by an approved professional
  • The equipment must be listed on the recognized devices list by Brussels Environment
  • The application must be submitted before the work via IRISbox

Indicative amounts 2025

Type of equipment Maximum grant amount
Air/water heat pump up to 4,500 €
Hot water heat pump up to 2,500 €
Condensing boiler (gas) up to 1,200 €
Biomass stove (pellets) up to 1,500 €
Solar water heater up to 3,500 €
Smart regulation (thermostat) up to 400 €

The amounts depend on several factors:

  • Household income
  • Type of housing
  • Neighborhood (bonus for priority areas)
  • Number of people in the household

Energy audit (PEB)

In some cases, an energy audit is recommended to obtain a bonus or prioritize the most effective work. It can also be subsidized up to 700 € through RENOLUTION.

Additional aids

6% VAT

All heating equipment installed in a residential building over 10 years old is eligible for the reduced VAT rate of 6%, provided that:

  • The installation is carried out by a VAT-registered contractor
  • The client is a private individual
  • The home is primarily used for residential purposes

This VAT reduction applies in both Wallonia and Brussels.

Zero-interest loan

Comment obtenir cette aide ?

  • 1


    Je remplis le formulaire en 1 clic.

  • 2

    Votre Manager Travaux se déplace gratuitement chez vous pour une évaluation énergétique.

  • 3

    Votre Manager Travaux gère pour vous toutes les démarches pour votre demande d’aides.

Comment obtenir des aides