Most disappointing ventilation systems do not have a hardware problem, they have a design problem. Over-long flexible ducts, right-angle bends, a unit sitting above a bedroom, airflow never balanced. The equipment was fine; the design was missing.
So we start by calculating. Room areas, required flow rates under NBN D50-001, duct routing, pressure losses, expected noise levels. You receive that study before signing anything.
We install mechanical extract systems (C, including demand-controlled) and heat-recovery systems (D, MVHR), in renovation and new build, in houses and apartments alike.
Ventilation and EPB
What the service covers
Design and sizing
Room-by-room flow rates to NBN D50-001, equipment selection, duct routing on plan, predicted noise level in bedrooms.
Ductwork
Rigid or smooth semi-rigid preferred, flexible runs kept short, bend radii respected. This is what determines final acoustic comfort.
Unit installation
Location chosen for maintenance access, noise control and duct length. Anti-vibration decoupling as standard.
Valves and grilles
Adjustable valves, transfer grilles under doors or over them, outdoor intake and discharge properly separated.
Balancing and commissioning
Flow rates set with a flow meter until design values are reached, in both directions on an MVHR system.
Handover pack
Duct layout, measured flow rates, filter references, manuals and a maintenance schedule. Anyone can work on it after us.
How the visit works
- 1
Technical survey
Room measurements, review of possible duct routes, constraints in ceilings, lofts and service shafts.
- 2
Design and detailed quote
Calculated flow rates, proposed equipment with references, routing and price. Options priced separately.
- 3
Ductwork installation
Ducts, manifolds, access hatches. Hatches go in from the start, that is what makes future maintenance possible.
- 4
Connections and commissioning
Electrical work, controls, balancing, final readings.
- 5
Walkthrough
We show you how to change filters, set speeds and recognise abnormal operation.
The brands we service
These are the brands actually found in Belgian homes, from a 1998 unit hidden above a suspended ceiling to a heat-recovery system fitted last year. We are not a dealer for any of them, so we have no reason to steer you towards one over another. We service whatever is already in your home.
The brand is not a prerequisite
- Renson
- Duco
- Zehnder
- Brink
- Vasco
- Lemmens
- Aldes
- Atlantic
- Helios
- Itho Daalderop
- Orcon
- Ubbink
- Buva
- Soler & Palau
- Wolf
- Codumé
Frequently asked questions
Heat recovery or extract only?
Heat recovery reclaims warmth from extracted air and filters incoming air: it makes sense in an air-tight, well-insulated building and where outdoor air quality is a concern. Extract-only is simpler, cheaper and easier to fit in a light renovation. The choice depends on air-tightness, the space available for ducts and your budget, we price both.
Can MVHR be retrofitted?
Yes, but the ductwork is the main constraint: two ducts must reach every room. In apartments this usually means dropped ceilings in circulation areas. We check feasibility during the survey before proposing anything.
Is MVHR noisy?
A properly designed installation is very discreet in bedrooms. Noise comes from a poorly decoupled unit, undersized ducts with excessive air velocity, or missing silencers. All three are dealt with at design stage, not afterwards.
Are there grants for installation?
Regional energy-renovation grants exist in Belgium and their conditions change regularly. We promise no figure: we tell you which body to consult for your region and supply the technical documents your application needs.
Related services
- Ventilation maintenanceA serviced ventilation system uses less energy, runs quieter and actually removes the moisture from your home.
- Duct cleaningCleaning the valves achieves nothing if the ductwork behind them is fouled. We treat the duct along its full length.
- Ventilation repairDiagnosis first, repair second. We only replace a unit when that is genuinely the right call.
A question about this service?
Describe your system: we tell you whether this service is the right answer to your situation, or whether something else is needed.