Is ventilation mandatory in new builds?

Yes, in Flanders ventilation is mandatory in new builds according to EPB regulations. Every home must meet minimum ventilation flow rates for supply and exhaust, as specified in the NBN D50-001 standard. This applies to all rooms.

What are the ventilation requirements for new builds?

The requirements include minimum air flow rates per room: living room 75 m³/h, bedroom 25 m³/h, kitchen and bathroom 50 m³/h. In addition, the system must operate continuously and quietly. A ventilation report is mandatory upon completion.

How does a ventilation system work in a new build?

A ventilation system continuously replaces indoor air with fresh outdoor air. System C exhausts mechanically and allows natural supply via vents; system D does both mechanically and recovers heat from the exhaust air.

What is the difference between system C and D?

System C has natural supply via window vents and mechanical exhaust; system D has mechanical supply and exhaust with heat recovery. System D is more energy-efficient but more expensive to purchase. The choice depends on budget and comfort preference.

How do I ventilate my new-build house?

Choose an approved ventilation system that meets EPB requirements. Have a ventilation preliminary design drawn up and ensure proper installation by a certified installer. Regular maintenance is essential for continued operation.

What does a ventilation system for a new build cost?

The price varies from €2,500 to €8,000, depending on the system type and the size of the house. System C is cheaper, system D more expensive but saves energy in the long term. Request a tailored quote for an exact price.

Do I also need to ventilate when renovating?

In major energy renovations (IER), ventilation may be mandatory. Even with smaller renovations, a good ventilation system is important for health and the EPC score. Get advice on the possibilities.

New-build ventilation in Flanders

New-build ventilation: clear explanation of systems, requirements and costs

From system C to D, from EPB regulations to subsidies: discover which ventilation fits your project and get advice from local specialists.

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10+ years of experience in Flanders
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A photorealistic close-up of a modern, compact white ventilation unit with heat recovery, ceiling-mounted in a neat technical room of a Flemish new-build home, with grey air ducts leading to other rooms, while an installer checks the filters with a screwdriver.

Everything you need to know about ventilation in new builds

A healthy indoor climate starts before the first stone is laid. In a new-build home, ventilation is not a luxury but an absolute necessity. Without a good system, you risk moisture problems, mold and unhealthy air. Moreover, the Flemish government requires that every new build meets strict ventilation requirements. But which system do you choose? And what does it cost? We outline everything clearly.

Ventilation in new builds: the rules in Flanders

The EPB regulations require ventilation in every new home and in extensions. You must submit a ventilation preliminary design with the building permit application and afterwards have a ventilation report drawn up. The NBN D50-001 standard sets the minimum flow rates: 75 m³/h for the living room, 25 m³/h for a bedroom, 50 m³/h for the kitchen and bathroom. If you do not comply, you risk fines and a low EPC score.

Ventilation systems for new builds: C or D?

In practice, you usually end up with two systems: ventilation system C (natural supply via vents in windows or walls, mechanical exhaust via a fan) and ventilation system D (mechanical supply and exhaust with heat recovery). System C is cheaper to install but loses heat through the vents. System D costs more but saves energy because the heat exchanger recovers up to 90% of the heat. For an average new-build home, the costs for system C are around €2,500 to €3,500, for system D between €4,000 and €8,000, depending on the size and complexity of the house.

Considerations per room

Not every room has the same need. Ventilation in the bedroom requires sufficient supply for a fresh night's sleep. In the bathroom and kitchen, the exhaust must be powerful enough to quickly remove moisture and odors. Also don't forget the ventilation requirements for windows: with system C, self-regulating vents in the joinery are necessary. Our specialists will help you find the ideal balance in your design.

Maintenance: crucial for lasting comfort

A ventilation system only works optimally with regular maintenance. Replace the filters at least every 6 months, clean the vents and have the ducts professionally cleaned every few years. This maintains high air quality and prevents the system from using unnecessary energy. Our maintenance contracts give you carefree fresh air.

Plan ahead, especially in the autumn

Most builders start their project in the spring. By working out your ventilation plan already in the autumn, you avoid waiting times and your installer can integrate the necessary ducts into the shell early in the construction process. Request your quote now and start your dream home without worries.

Our approach

Why choose ventilatiesysteem.info?

As the only ventilation specialist in Flanders that combines clear explanation with a local approach, we ensure that every home and business breathes perfectly.

Local knowledge

Our installers know the Flemish building style and regulations through and through. No standard solution, but customization for your home or business premises.

Clear communication

We translate complex ventilation technology into understandable language. You know exactly what to expect, from initial advice to completion.

Fair price

Transparent quotes without hidden costs. We also help you apply for subsidies for ventilation with heat recovery.

Fast response

Plan your ventilation now and we ensure your project is ready on time, even in busy construction periods.

Regions

New-build ventilation throughout Flanders

Our ventilation specialists are active in every Flemish province. Find an installer in your area for advice and installation.

Antwerp
Limburg
East Flanders
Flemish Brabant
West Flanders

Frequently asked questions about ventilation in new builds

Is ventilation mandatory in new builds?
Yes, in Flanders ventilation is mandatory in new builds according to EPB regulations. Every home must meet minimum ventilation flow rates for supply and exhaust, as specified in the NBN D50-001 standard. This applies to all rooms.
What are the ventilation requirements for new builds?
The requirements include minimum air flow rates per room: living room 75 m³/h, bedroom 25 m³/h, kitchen and bathroom 50 m³/h. In addition, the system must operate continuously and quietly. A ventilation report is mandatory upon completion.
How does a ventilation system work in a new build?
A ventilation system continuously replaces indoor air with fresh outdoor air. System C exhausts mechanically and allows natural supply via vents; system D does both mechanically and recovers heat from the exhaust air.
What is the difference between system C and D?
System C has natural supply via window vents and mechanical exhaust; system D has mechanical supply and exhaust with heat recovery. System D is more energy-efficient but more expensive to purchase. The choice depends on budget and comfort preference.
How do I ventilate my new-build house?
Choose an approved ventilation system that meets EPB requirements. Have a ventilation preliminary design drawn up and ensure proper installation by a certified installer. Regular maintenance is essential for continued operation.
What does a ventilation system for a new build cost?
The price varies from €2,500 to €8,000, depending on the system type and the size of the house. System C is cheaper, system D more expensive but saves energy in the long term. Request a tailored quote for an exact price.
Do I also need to ventilate when renovating?
In major energy renovations (IER), ventilation may be mandatory. Even with smaller renovations, a good ventilation system is important for health and the EPC score. Get advice on the possibilities.

Service & practice

Your questions about our ventilation service

Can I install a ventilation system myself?

We recommend hiring a professional installer. Proper installation is crucial for operation and to meet EPB requirements. Our experts ensure a flawless installation.

How quickly can a ventilation system be installed?

After the quote and order confirmation, we schedule the installation within a few weeks. Depending on the complexity, installation takes 1 to 3 days. In new builds, it's best to plan during the shell construction phase.

Do you also maintain ventilation systems?

Yes, we offer tailored maintenance contracts. Regular maintenance is essential for good air quality and energy efficiency. This includes filter replacement and duct cleaning, which we carry out for you.

Can I get a ventilation subsidy?

For ventilation system D with heat recovery, you may be eligible for a subsidy from the grid operator. We inform you about the current conditions and help with the application so you don't miss out on any subsidy.

Is a ventilation plan mandatory for new builds?

Yes, for the building permit application you must submit a ventilation preliminary design. Our specialists draw this up for you and ensure it perfectly aligns with your building plans and meets all requirements.

Ready for fresh air in your new build?

Request your personal quote today. Our specialists will think along with you and provide a proposal tailored to your project and budget.