Uninsulated houses
Heat pump alone too small.
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Heat Pump in Brussels: Study, Installation, Servicing and Repair
In short: Service Technic Belgium studies, installs, services and repairs air-to-water and air-to-air heat pumps in the 19 municipalities of Brussels, for town houses, flats and small buildings. Call 0477 03 88 98.
A Brussels town house from 1910 with cast-iron radiators and a renovated flat in a 1970s block do not take the same heat pump. Before talking about brands or power, we look at the building: walls, windows, radiators, and what it burns in gas today.
5,0on Google· 22 years of experience
StudyBefore any quote
Air-to-waterRadiators or underfloor
ServicingOnce a year
RepairsCommon brands
A heat pump in a Brussels town house
Many Brussels homes are deep terraced houses on three or four floors, built before 1940, with high ceilings and single-glazed windows that have been replaced over time. A heat pump works well there on one condition: the house must keep its heat.
With uninsulated walls, old windows and small radiators, the heat pump has to produce very hot water. It then uses a lot of electricity and the electric back-up kicks in often.
So we start with a survey: floor area, insulation, radiators, gas consumption over the last winters. That survey tells whether a heat pump makes sense on its own or alongside the existing boiler.
Radiators, underfloor heating and water temperature
A heat pump likes lukewarm water. With underfloor heating or large radiators it runs at 35 to 45 °C and stays economical.
With the original cast-iron radiators it can be enough if the house has been insulated; otherwise a few radiators in the coldest rooms are replaced by larger ones.
We calculate room by room what is needed, so you do not replace every radiator when three would do.
Where to put the outdoor unit
In a narrow street in Saint-Gilles or Schaerbeek, the front façade is not the place. The outdoor unit usually goes in the garden, the courtyard or on a flat roof, on an anti-vibration support.
Noise for the neighbours, defrost water in winter and free air flow around the unit all have to be considered. Brussels rules on noise and, in some streets, on façades apply.
In a block of flats the co-ownership must agree: we help you prepare the file with plans and the unit's data sheet.
Hybrid heat pump
When the gas boiler is recent and the house is not yet insulated, a hybrid heat pump is often a good compromise.
The heat pump heats while the weather is mild, the boiler takes over in deep cold. The controller picks the cheaper source automatically according to the outdoor temperature.
It is also a way to move step by step: insulate the roof first, then the walls, and let the heat pump do more of the work every year.
Yearly servicing
A heat pump needs a check every year: cleaning the outdoor coil, checking the water circuit pressure, the filters, the hot water cylinder and the settings.
In Brussels, leaves from street trees, dust from building sites and pigeons on flat roofs foul the outdoor unit's fins quickly. A dirty unit loses efficiency without anyone noticing.
We also check the heating curve: a curve set too high is the first cause of electricity bills that are too high.
Breakdowns and repairs
Flow error, no heating, lukewarm hot water, an outdoor unit covered in ice: we repair the common brands, including Daikin Altherma, Vaillant aroTHERM, Mitsubishi Ecodan, Panasonic Aquarea, Viessmann Vitocal and LG Therma V.
The engineer measures before replacing anything: water flow, pressures, sensors, communication between the units. You know what he found and what the repair costs before he starts.
Note the code shown on the controller and send a photo on WhatsApp: it saves time on site.
What we often see in Brussels
Small radiators
Water too hot required.
Electric back-up
Running too often.
Dirty outdoor units
Leaves and city dust.
Before you call us
Your consumption
Gas or oil bills for the last two winters.
Radiators
How many and their size, a photo is enough.
Insulation
Roof, walls, windows: what has been done.
A breakdown?
The code on the display and the brand.
How a visit works
You call or book
Describe the problem; a photo of the unit or of the code on the display, sent on WhatsApp, helps the technician prepare.
Call-out cost first
The office tells you what the visit costs and when the technician will come, before anyone sets off.
Your agreement first
On site, the technician explains what he found and what the repair costs, then waits for your yes. Job sheet and invoice at the end.
What our customers say
Heat pumps in all 19 municipalities
We work everywhere in the Brussels-Capital Region, for private owners, landlords and managing agents.
City of BrusselsIxellesEtterbeekUccleSchaerbeekAnderlechtMolenbeekSaint-GillesForestWoluwe-Saint-LambertWoluwe-Saint-PierreAuderghemWatermael-BoitsfortEvereJetteGanshorenKoekelbergBerchem-Sainte-AgatheSaint-Josse
Municipalities we cover
Survey, installation, servicing or repair of a heat pump: our technicians visit every municipality of Brussels. The list below goes area by area; a link leads to the local page where there is one.
In the centre and the north: the City of Brussels, Evere, Schaerbeek (Schaarbeek), Neder-Over-Heembeek, Haren, Laeken (Laken) and Saint-Josse-ten-Noode (Sint-Joost-ten-Node).
Across the west we cover Ganshoren, Molenbeek-Saint-Jean (Sint-Jans-Molenbeek), Berchem-Sainte-Agathe (Sint-Agatha-Berchem), Anderlecht, Jette and Koekelberg.
In the south, too: Saint-Gilles (Sint-Gillis), Watermael-Boitsfort (Watermaal-Bosvoorde), Ixelles (Elsene), Uccle (Ukkel) and Forest (Vorst).
And in the east: Woluwe-Saint-Pierre (Sint-Pieters-Woluwe), Etterbeek, Woluwe-Saint-Lambert (Sint-Lambrechts-Woluwe) and Auderghem (Oudergem).
Your area isn't listed? It belongs to one of these municipalities, and we cover it too.
More about heat pumps in Brussels
Frequently asked questions
Do you cover all of Brussels?
Yes, all 19 municipalities of the Brussels-Capital Region and the surrounding areas.
Is a heat pump suitable for an old Brussels house?
Sometimes on its own, often together with the boiler (hybrid). It depends on insulation and radiators, which we look at before proposing anything.
Do I have to replace all my radiators?
Rarely. A room-by-room calculation often shows that two or three larger radiators are enough.
My electricity bill went up with the heat pump. Why?
Often a heating curve set too high or an electric back-up badly set. A check of the settings solves most cases.
Does a heat pump need servicing?
Yes, once a year: outdoor unit, filters, pressure, cylinder and settings.
Do you repair heat pumps fitted by other installers?
Yes, the common brands: Vaillant, Daikin, Mitsubishi, Panasonic, Viessmann, LG, Atlantic and others.
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.
A heat pump in Brussels?
Call 0477 03 88 98: we look at the house before proposing a unit, and we repair the one that is already there.