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Viessmann Heating Engineer: Boiler Repair, Servicing and Breakdowns
Whether it is a wall-hung Vitodens in a flat, a Vitola oil boiler in a country house or a Vitocal heat pump in a new build, we repair and service Viessmann heating everywhere in Belgium: Brussels, Wallonia and Flanders. We come 7 days a week, and the price is always agreed beforehand.
5,0on Google22 years of experiencePrice agreed before the work
Vitodens and VitolaGas and oil boilers
VitocalHeat pump repair
Vitotronic and ViCareControls checked
Free quoteFor any replacement
Looking after a Viessmann Vitodens
Few condensing gas boilers are as widespread in Belgian homes as the Vitodens: the 100-W, 111-W, 200-W and 222-W are everywhere. They last a long time, on one condition: regular servicing. The legal interval varies from one Region to another and between gas and oil, and we tell you which one you must follow.
During the visit, the burner is removed and the stainless steel exchanger cleaned. The engineer inspects the burner surface and gaskets, swaps worn ignition and ionisation electrodes, rinses the siphon, tests the expansion vessel and finishes with a combustion measurement, correcting the settings when needed.
You get the maintenance attestation before he leaves. If the boiler is connected to the ViCare app, he can also make sure the link and your heating programmes still work.
Vitola and Vitorondens oil boilers
Outside the cities, many houses still run on heating oil, and Viessmann floor-standing models are a familiar sight in their cellars: the Vitola, and the condensing Vitorondens, frequently next to a separate hot water tank.
An oil boiler needs a visit every year. The burner is cleaned and given a new nozzle and filter, soot is removed from the exchanger, the flue is looked at and the combustion is tested. When such a boiler will not start, the trouble usually lies with the burner (photocell, nozzle, oil pump, ignition) or with the fuel feed.
Ready to move away from oil? A modern condensing appliance, a switch to mains gas where available, or a heat pump: we compare them after a visit, in a free quote.
Vitocal heat pumps
The Vitocal air-to-water heat pumps are taking over from gas and oil boilers in more and more Belgian homes. We install them after studying the house, and we maintain and repair units already in place, whether standalone or combined with a boiler.
The faults we see most are an outdoor unit that ices up, insufficient water flow, a sensor or pressure alarm, or radiators that never quite get warm. The engineer reads the error list in the controller, measures flows and temperatures, and tells you the solution and its price before acting.
Keep your Vitodens, add a heat pump or replace the lot: one team follows you from the first visit to the annual service.
Diagnosis of Viessmann breakdowns
When a Viessmann stops, the Vitotronic control or the display shows a code with a warning sign. That code is a starting point for the engineer, not a list of parts to change. The main messages are explained on our Viessmann error codes page.
Typical causes are no flame signal at start-up, a faulty temperature sensor, a blocked condensate outlet, a worn circulator or a pressure that has dropped too low. Sometimes the boiler itself is fine and the circuit is to blame: air, stuck radiator valves or sludge.
So our engineer tests the boiler and the radiators alike, explains what he finds and the repair cost, and only goes ahead with your agreement.
How a Viessmann call-out goes
Agree the price
The call-out charge and first hour are given on the phone; spare parts are quoted on site before fitting.
Work done and explained
Repair or service, a clear account of what was done, and the paperwork left with you.
Why Viessmann owners choose us
22 years on Belgian systems
Old cast-iron boilers in big houses and brand-new wall units in flats: we know both.
Frank advice
If a repair is not worthwhile, we tell you and lay out the replacement options.
One contact
Boiler, heat pump, radiators, plumbing and ventilation handled by the same office.
Paperwork in order
Job sheet, invoice and maintenance attestation for your insurer or landlord.
What our customers say
Viessmann service across Belgium
Our engineers repair and maintain Viessmann boilers and heat pumps all over Belgium: in Brussels, in Wallonia and in Flanders. For an urgent breakdown, call us: we offer the first free slot, often that same day depending on your area.
BrusselsWalloon BrabantFlemish BrabantHainautNamurLiègeLuxembourg provinceAntwerpEast FlandersWest FlandersLimburg
The brands we work with
Our technicians work on all brands: they install, service and repair appliances from the major manufacturers. For a new installation, we recommend the model that suits your home and budget.
We buy our equipment from all the major Belgian wholesalers and suppliers, including Facq, Van Marcke and Desco: genuine parts, quickly available.
Frequently asked questions
Which Viessmann appliances do you repair?
Vitodens gas boilers, Vitola and Vitorondens oil boilers, Vitocal heat pumps and the Vitotronic controllers. For older models, we first check that parts can still be ordered.
Is a Vitodens difficult to repair?
Not for an engineer used to it. Most repairs involve electrodes, fan, sensors, pump or condensate drain, and many are done in one visit.
Do you service Vitocal heat pumps?
Yes: water circuit, filters, outdoor unit, refrigeration readings and settings, plus repair of the faults the controller reports.
Are you Viessmann's own technicians?
No, we are an independent company that repairs and services Viessmann appliances. If yours is still covered by the manufacturer, check their terms first.
How is the price of a repair set?
The call-out and first hour are announced before we come; each part is priced before it is fitted. New appliances are quoted for free.
My oil boiler smells. What should I do?
A smell of fuel or fumes is never normal. Ventilate, switch the boiler off if it is safe and call 0477 03 88 98.
Can you install another brand instead?
Yes. We recommend the appliance that suits your home and budget, Viessmann or not, and handle the whole replacement.
Viessmann not heating?
Call us for a repair, book your yearly service online or ask for a free replacement quote.