Ventilation specialists — Brussels and Brabant
Ventilation that actually does its job
We do one thing: service, clean and repair mechanical ventilation. Airflow measured before and after every visit, figures handed to you in writing.
- Slot booked online, confirmed by email
- Measured airflow and a written report at every visit
- Payment on site, once the work is done
- NBN D50-001
- The Belgian standard we measure your airflow against
- m³/h
- Read room by room, before and after every visit
- 7/7
- Morning 08:30–12:00 or afternoon 13:00–17:00, weekends included
How we work
We measure before concluding
A flow meter at every valve, before and after. You know what your system actually does, not what it should do.
A written report every time
Condition found, readings taken, parts replaced, recommendations. A document you can hand to any other professional.
A quote up front, not an invoice after
The price is agreed before the work. Any additional part requires your prior approval.
We say when it isn't necessary
If a measurement shows your system is working properly, we tell you. Selling a pointless service costs a client.
Services
What we do
From the annual service of a domestic system to a contract for an entire building. Nothing else.
Ventilation maintenance
A serviced ventilation system uses less energy, runs quieter and actually removes the moisture from your home.
View serviceDuct cleaning
Cleaning the valves achieves nothing if the ductwork behind them is fouled. We treat the duct along its full length.
View serviceVentilation repair
Diagnosis first, repair second. We only replace a unit when that is genuinely the right call.
View serviceVentilation installation
A good installation is decided before anything is fitted: duct routing, sizing, unit location. The rest is assembly.
View serviceMeasurement & air quality
Measure before you spend. A written report tells you whether your ventilation is doing its job — and by how much it falls short.
View serviceBuildings & offices
An annual schedule, a report per unit, a clear invoice. Enough to get through an owners' meeting without argument.
View service
Why it matters
A neglected ventilation system doesn't stop: it slows down
That is what makes the problem insidious. The motor still runs, the light is green, and yet airflow has halved since the last service. Nobody notices — until condensation returns every winter in the same spot.
Accumulating moisture does not just spoil comfort: it attacks finishes, encourages mould growth and degrades the air you breathe for eight hours a night behind a closed door.
Signals not to ignore
- Mist lingers on the windows when you wake
- Black marks appear in corners or on seals
- Cooking smells drift from room to room
- The unit has started vibrating, whistling or rumbling
- A sheet of paper no longer holds against the extract valve
- You don't know when the filters were changed
How it works
Four steps, no surprises
- 1
You describe the situation
By phone or through the form. The system type and your municipality are enough to start.
- 2
We price it
A free, detailed quote. For a building or a complex installation, we survey the site first.
- 3
We carry out the work
A time slot confirmed in advance, floor protection, measuring equipment. You have nothing to prepare.
- 4
You receive the report
Before/after readings, work carried out, what to watch and by when.
Free tools
Two calculators, no sign-up
They answer the two questions we are asked most — and you do not need us to use them.
Ventilation flow rate calculator
NBN D50-001 derives a room's flow rate from its floor area: 3.6 m³/h per m², constrained between a minimum and a maximum specific to the room type. Enter your rooms below.
Open the calculatorsWhat your region requires
Flow rates are calculated to NBN D50-001 everywhere. What changes between regions is how compliance is verified on a project.
Open the calculatorsService area
Brussels, Walloon Brabant and Flemish Brabant
Your municipality determines the region, and therefore the ventilation requirements that apply to your home — they differ across the three.
- Anderlecht
- Braine-l'Alleud
- Brussels
- Etterbeek
- Forest
- Ixelles
- Leuven
- Ottignies-Louvain-la-Neuve
- Schaerbeek
- Tervuren
- Uccle
- Vilvoorde
- Waterloo
- Wavre
- Woluwe-Saint-Lambert
- Zaventem
Advice
Understand before you spend
Technical articles written so you can judge a quote — including ours.
Ventilation
Open kitchen, strong smells: why the cooker hood is not enough
In an open kitchen, a running cooker hood does not guarantee a neutral-smelling flat. The way air is supplied and extracted across the whole dwelling matters just as much as the hood itself.
· 6 min read
Ventilation
Ventilation in a flat: where your responsibility stops and the co-ownership's begins
In a Brussels apartment, a ventilation problem is rarely just your problem. Know where your private lot ends, where the shared duct starts, and who decides on collective work.
· 5 min read
Ventilation
Window and façade air vents: why not block them and how to make them bearable
A noisy, cold air vent in a frame or façade is tempting to block. The relief is real, but the side effects are too. Better to understand what it does and how to tame it.
· 6 min read
FAQ
What people ask us most
Is the quote really free?
Yes. Producing a quote from your description costs you nothing and commits you to nothing. For a building or a complex installation, a survey visit is needed before pricing: we tell you in advance whether that visit is free or chargeable, and on what terms it is deducted from the work.
How often should ventilation be serviced?
Manufacturers generally recommend a filter check every 3 to 6 months and a full service once a year. The real interval depends on your surroundings: a busy road, pets, recent building works and an open-plan kitchen all speed up fouling considerably.
Is ventilation servicing mandatory in Belgium?
No. Unlike periodic boiler inspection, servicing residential ventilation is not required by regulation. That does not make it optional technically: an unserviced system loses airflow gradually without giving any signal.
How quickly do you reply?
We handle form enquiries within 24 working hours. Enquiries arriving at the weekend or on a public holiday are handled on the next working day. For a breakdown or a complete loss of ventilation, the phone is faster.
What does a visit actually involve?
A time slot confirmed in advance, floor protection, measuring equipment. You have nothing to prepare beyond clearing access to the unit and the valves. At the end, we go through what was done and what to keep an eye on.
Book your service
Pick a half-day, confirm by email, and it is held. You pay on site once the work is done — nothing upfront.
- 01We arrive within the agreed slot, with the measuring equipment.
- 02Airflow recorded room by room before any work.
- 03Cleaning, filter replacement, adjustments.
- 04Fresh readings, then the written report handed over.
Would you rather have a quote first?
Unusual installation, several properties, or you simply want to talk it through: describe your situation and we will come back within 24 working hours.
- We read your enquiry and come back to you within 24 working hours.
- If the information is sufficient, you receive a written estimate.
- If the installation is complex, or it is a whole building, we propose a survey visit before pricing.
- Nothing is committed until you approve the quote.