Heating
Replacing a gas condensing boiler
Removing the old appliance, adapting the gas, water and flue connections, fitting the new boiler, filling and bleeding the circuit, then commissioning with the combustion set up.
What you are looking at in these photos
This page shows the types of job we carry out day to day. Each card describes what the work really covers: what is removed, what is fitted, what is checked before we leave.
We would rather describe the work than tell stories. A boiler replacement or a power flush cannot be judged from a photo: it is judged on what was checked before, during and after.
Chauffitherm is a heating and sanitary company working since 2017, run by Abdelmajid El Makhoukhi. This page describes what we do, job type by job type.
Illustrative photos. They show the type of work described on each card, not an identifiable customer's job.
Need someone quickly?
Call now — 0488 02 77 07The stages of a boiler replacement
It is the biggest job on the list, and the one that worries people most. Here is how it goes, from the first call to handing over the documents.
Survey and quote
We note the existing model, the type of flue, the output needed and the space available. The quote is based on that, not on an estimate over the phone.
Preparation and isolation
Isolating the gas, water and electrical supply to the appliance, draining the relevant part of the circuit, protecting the floor and the work area.
Removing the old appliance
The old boiler is taken off the wall, drained and carried out. We take it away: disposal at a treatment centre is part of the job.
Fitting and connections
Mounting the new boiler, reworking the gas, water, heating and condensate connections, adapting or replacing the flue if the appliance requires it.
Commissioning and documents
Filling, bleeding, setting up combustion, checking the safety devices, explaining how it and the thermostat work, then handing over the appliance's documents.
What changes once the job is finished
On a replacement as on a power flush, here is what you should see before we leave.
- Radiators warm all the way up
If the bottom of a radiator stays cold, the circuit has not been bled or not been flushed. We do not leave it like that.
- Stable hot water
Steady temperature and flow at the outlets, with no change when a second tap is opened.
- An appliance set up, not just plugged in
Combustion is measured and adjusted. A new appliance that is badly set up uses more than an old one that is well maintained.
- The documents in your hand
Service certificate, sweeping certificate or the appliance manual depending on the job, handed over on site.
Free quote — Callout 7 days a week
A job like this at your place?
Describe the system by phone, by email or on WhatsApp. A photo of the appliance or its data plate is often enough to place the work and the price.
Rue Kasterlinden 65, 1082 Berchem-Sainte-Agathe — Flat €35 travel charge — 7 days a week including public holidays
What our customers say
4.8/5 on Google
“Very good experience. Abdelmajid is a real professional. Fast and effective repair. I highly recommend him.”
Nadia Mimouni
“Great service, fast and professional work to repair my boiler. I recommend Chauffitherm without hesitation.”
Fayssal Assahraoui
“Very professional, he took the time to explain the problem. Fast callout. I recommend.”
Linda De Backer
“Great service! Abdelmajid came quickly, diagnosed the problem in a few minutes and fixed everything. Reasonable price and careful work.”
Meryem Elaiche
“Fast, effective, professional. The boiler breakdown was sorted in record time. Very satisfied.”
Houssam Zouad
“Fast and professional callout. Abdelmajid solved my boiler problem in under an hour.”
Emma Vandenberghe
“Excellent service. My water heater had stopped working, I called in the morning and it was repaired that afternoon. Very professional.”
Karim Benali
“Very happy with the service. Fast, effective and a fair price. I highly recommend.”
Sophie Martin
Step 1 of 3Service
Which service do you need?
Flat €35 travel chargeFree quoteCallout 7 days a week
Not sure which type of job you need? Describe the situation to us.
Request a quoteGoing further
All our services
The detail of every service, heating, domestic hot water and plumbing included.
See the pageOur prices
Travel, repairs and servicing: prices published before you even call.
See the pageThe areas we cover
Brussels, Wallonia and Flanders, at the same €35 travel charge.
See the pageContact us
Phone, form or WhatsApp, seven days a week.
See the pageFrequently asked questions about our work
How long does a boiler replacement take?
A working day in most cases, when the appliance stays in the same place and the flue is suitable. If the flue has to be adapted, if the boiler moves position or if the circuit needs flushing, allow more. The time quoted is set out in the quote.
Does the whole system have to be drained?
Not always. For a boiler replacement, draining is often limited to the lower part of the circuit. Replacing radiators or power flushing, on the other hand, calls for a wider drain-down, followed by refilling, full bleeding and balancing.
Do I have to be there during the work?
At the start and the end, yes: at the start to show us the system and the isolating valves, at the end for commissioning, the explanations and handing over the documents. In between, you do not need to be there throughout.
Who takes away the old boiler?
We do. Removing the old appliance and taking it to a treatment centre is part of the job. You have nothing to carry or to drop off at the recycling centre.
Is there a warranty on the work carried out?
Appliances are covered by the manufacturer's warranty, whose length depends on the brand and model installed. The work carried out is guaranteed. The exact conditions are set out on the quote and then on the invoice.
Do you work in flats?
Yes, that is most of what we do in Brussels. We take the building's constraints into account: access via the stairwell, a shared flue, isolating valves in a communal cellar, permitted working hours. We flag anything that is the managing agent's responsibility before we start.
Let's talk about your system
One call is enough to find out what the job involves and what it costs. €35 travel charge, 7 days a week, public holidays included.
No obligationCertified4.8/5 on Google