The flue
Chimney, liner, shared duct.
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Boiler Installation and Replacement in Brussels: Houses, Flats and Buildings
In short: your boiler is over fifteen years old, breaks down every winter or uses too much? We install and replace boilers in the 19 municipalities of the Brussels Region, with a free visit before any quote. The price in the quote does not change on the day of the works. Call 0477 03 88 98.
No boiler is picked from a catalogue without seeing the installation. A technician comes to look at the boiler, the flue, the radiators and the hot water, measures what your home really needs and then writes a quote that covers everything.
5,0on Google· 22 years of experience
Free visitBefore the quote
In one dayFor most replacements
Gas and heat pumpAll makes
Fixed quoteNo change on the day
The visit: look before proposing
In Brussels the flue is often the real issue. In a townhouse in Saint-Gilles or Schaerbeek, the old boiler sends its fumes up a brick chimney that will need a liner. In a block of flats, many appliances are connected to a shared flue of the CLV or shunt type.
The new boiler has to be compatible with that flue, and the co-owners sometimes have their say. It is the first point we check, so that the quote takes everything into account.
The technician also looks at the gas supply, the space around the boiler and the condensate drain, and asks how many people use the hot water at the same time.
A condensing gas boiler
Many of the boilers we replace in Brussels are atmospheric or low-temperature models from the 1990s and 2000s. They still heat, but with a clearly lower efficiency than a current condensing boiler, and parts are getting scarce.
For a flat with one bathroom, a combi boiler that also makes hot water is enough. For a house with two bathrooms used at the same time, a separate tank avoids running out of hot water in the morning.
On the day of the works we protect the way in, remove the old boiler, fit the new one, commission it and set the combustion. By the evening you have heating and hot water again.
An air-to-water heat pump
In a renovated house in Uccle, Watermael-Boitsfort or Woluwe-Saint-Pierre, with a garden or a flat roof for the outdoor unit, a heat pump can replace the boiler.
In a poorly insulated terraced house with its original cast iron radiators, a condensing boiler is often still the more sensible choice today. We tell you frankly whether your house is ready or whether the insulation should come first.
The noise of the outdoor unit matters in tight city gardens too: we choose the position so as not to disturb the neighbours.
Shared plant rooms of co-ownerships
Many Brussels buildings in Ixelles, Etterbeek or Forest are heated by a shared plant room in the basement. When it has to be renewed, the project is prepared with the syndic and the general meeting of co-owners.
Our design office studies the real needs of the building and proposes the most suitable solution: condensing boilers in cascade, a large heat pump or a hybrid installation, with zone controls.
The works are organised to keep the heating cut as short as possible. Afterwards we can take care of the servicing and repairs of the plant room.
What the Brussels rules ask
The Brussels-Capital Region has its own rules for heating, and we handle the documents. After the installation, the heating energy performance rules require an acceptance of the system, with an acceptance report to keep.
After that, a gas boiler is checked at least every two years and an oil boiler every year. We can remind you of the date and carry out the check.
Renolution grants change regularly. We tell you what to check before signing, without promising an amount.
A replacement in three steps
First the visit, free and at a time that suits you, to see the boiler, the flue and the radiators.
Then the quote: appliance, flue, connections, commissioning and removal of the old boiler are all in it. What is not in the quote is not invoiced without your new agreement.
Finally the works, in one day in most cases, with the job sheet and the invoice handed over at the end.
What we check at the visit
The radiators
Size and condition.
Hot water
Combi or separate tank.
Gas and drain
Supply and condensate.
To prepare the visit
The current boiler
Make and age.
Your home
Flat or house, floors.
Bathrooms
How many used at once.
The building
Syndic contact if a flat.
How we work
Phone, WhatsApp or online
Use whichever suits you and tell us your neighbourhood.
Time confirmed
You know when the technician will come and what the call-out costs in advance.
Nothing without your OK
Work starts once you have said yes. Keep the job sheet and the invoice for your records.
What our customers say
Where we work
We install boilers throughout the Brussels Region, from the terraced houses of Anderlecht to the villas of Uccle, and in the towns around the city.
City of BrusselsIxellesSchaerbeekAnderlechtMolenbeekUccleForestSaint-GillesEtterbeekWoluwe-Saint-LambertWoluwe-Saint-PierreAuderghemJetteEvereWatermael-BoitsfortLaeken
Frequently asked questions
How long does a replacement take?
One day for a simple replacement in the same place. Allow one or two more days if the chimney needs a liner or the boiler moves.
My building has a shared flue: is that a problem?
No, but the new boiler has to be compatible with it. We check this at the visit and contact the syndic if needed.
Is the quote free?
Yes, the visit and the quote are free and without obligation. Call 0477 03 88 98 or book online.
Which makes do you install?
The usual makes in Belgium, with parts easy to find in Brussels: Vaillant, Bulex, Viessmann, Remeha, ACV, Buderus, Saunier Duval.
Combi boiler or separate tank?
A combi is enough for a flat with one bathroom. With two bathrooms used at the same time, a separate tank is more comfortable.
Do you remove the old boiler?
Yes, removing and disposing of the old appliance is included in the quote.
How do I book?
Call 0477 03 88 98, send us a WhatsApp message or book online with the « Book an appointment » button. Tell us the municipality and, in a few words, what is going on.
Thinking of a new boiler?
Ask for your free visit in Brussels on 0477 03 88 98: you receive a detailed quote, without obligation.