What does a ventilation system D with heat recovery cost in Belgium in 2026?
Last updated: April 2026
A heat recovery ventilation (HRV) system, also known as mechanical ventilation with heat recovery (MVHR), ensures a healthy indoor climate while recovering heat from the exhaust air. In a well-insulated home, this system is essential: without controlled ventilation, moisture, mold, and poor air quality can develop. This cost guide provides a clear overview of typical 2026 prices, the main cost components, and the choices that make the biggest difference.
Price indications range between €1,800 and €7,000 per installation, based on current 2026 market data. The price differs considerably between a central system with ducts throughout the home and decentralized units per room. In existing construction, installation costs are generally higher because ducts need to be concealed, while in new construction the channels are already incorporated into the build. From 2026, regional support may also be available as part of an insulation package.
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This is an estimate based on average 2026 prices. Actual costs may vary. Always request multiple quotes for an exact price.
Cost factors
The total cost usually consists of:
- HRV unit and filters: 30-45% of the total
- Ducts, valves, and grilles: 20-30% of the total
- Installation and commissioning: 25-35% of the total
- Concealment and finishing: 5-15% of the total
These percentages can vary depending on the type of system, the home size, and the complexity of the ductwork in existing construction.
Why do prices vary?
- Central vs. decentralized system: A central HRV system with ducts serves the entire home but requires more installation time and concealment costs. Decentralized units per room are easier to install but less efficient for larger homes.
- Capacity and home size: System capacity is expressed in m3/h and must be matched to the volume of the home and the number of occupants. An undersized system will not ventilate sufficiently.
- Existing construction vs. new build: In existing construction, ducts often need to be concealed in dropped ceilings or along walls, significantly increasing costs. In new builds, the ducts are already integrated into the structure.
- System efficiency (heat recovery rate): The best systems achieve a heat recovery rate of 90% or higher. This significantly reduces heating costs, but the unit purchase price is higher.
Subsidies & incentives
Subsidies are available for installing an HRV system as part of a broader energy-saving approach. Below are the main schemes for 2026.
regional grants Subsidy for HRV (2026)
An HRV system can qualify for regional renovation grants as part of an insulation package:
- Subsidy: Approximately €400 for an HRV installation as an insulation measure (exact amounts via the relevant regional grant portal)
- Requirement: The home must also include at least one other insulation measure (e.g., roof insulation, cavity wall insulation, or floor insulation)
- Application: Via the relevant regional grant portal within 24 months after installation
- Important: Check current conditions, as the regional grants scheme is updated annually
Combination Options
The subsidy for HRV can be combined with other measures:
- regional renovation grants for roof insulation, cavity wall insulation, or floor insulation
- Energy savings loan via the Warmtefonds (max. €8,500 at low interest)
- Municipal subsidies for sustainability improvements (depending on your municipality)
Regional price differences
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