Gas boiler service
Cleaning of burner and heat exchanger, safety checks, combustion analysis, adjustment. Service certificate compliant with regional rules handed over on site.
Zaventem · Vlaams-Brabant
Boiler breakdownCold radiatorBoiler serviceFaulty thermostat? One team.
Boiler down in Zaventem? You describe the error code or symptom, we state the diagnosis fee and the repair range. The part is priced before it is ordered.
PRICE UPFRONT before the job startsCERTIFICATE issued after the serviceGAS · OIL conventional and condensing6 % VAT homes over 10 years old
- VAT BE 1027.949.184
- Free quote
- Seat: Drogenbos
- FR · NL · EN
DispatchSector: Zaventem (1930)
--:--Brussels time ·
StatusTeam reachable by phone
TimingTime slot and price confirmed by phone before the technician leaves
HeatingZaventem · 1930
Emergency
Heating engineer in Zaventem: boiler breakdown? One team.
- 01Call
- 02Diagnosis on the phone
- 03Call-out
01 — Estimate
Your price range in 20 seconds
Two choices and you have an order of magnitude excluding VAT, without leaving your number. Belgian market ranges, not our own price list.
Preliminary quoteEstimate for Zaventem
Estimated range · excl. VAT
- incl. 6 % VAT
- incl. 21 % VAT
6 %: private dwelling over ten years old, works with parts fitted. Otherwise 21 %.
Indicative estimate excluding VAT based on 2026 Belgian market ranges. The actual amount is quoted on the phone and confirmed on site before work begins.
02 — Prices
Indicative Belgian market prices
The ranges the market charges in 2026, published as they are. Your exact price for Zaventem is stated before the call-out.
- Call-out (flat fee)excl. parts
- €20 – 40 excl. VAT flat rate€21 – 42 incl. 6 % VAT · €24 – 48 incl. 21 % VAT
- Heating engineer hourly rateexcl. parts
- €32 – 70 excl. VAT / h€34 – 74 incl. 6 % VAT · €39 – 85 incl. 21 % VAT
- Conventional gas boiler service (certificate included)excl. parts
- €100 – 135 excl. VAT flat rate€106 – 143 incl. 6 % VAT · €121 – 163 incl. 21 % VAT
- Condensing gas boiler serviceexcl. parts
- €135 – 170 excl. VAT flat rate€143 – 180 incl. 6 % VAT · €163 – 206 incl. 21 % VAT
- Oil boiler service (nozzle and sweep included)
- €150 – 250 excl. VAT flat rate€159 – 265 incl. 6 % VAT · €182 – 302 incl. 21 % VAT
- Flue sweepingexcl. parts
- €70 – 100 excl. VAT flat rate€74 – 106 incl. 6 % VAT · €85 – 121 incl. 21 % VAT
- Fault diagnosis (call-out + 1 h)excl. parts
- €130 – 220 excl. VAT flat rate€138 – 233 incl. 6 % VAT · €157 – 266 incl. 21 % VAT
- Bleeding and balancing the radiator circuitexcl. parts
- €100 – 180 excl. VAT flat rate€106 – 191 incl. 6 % VAT · €121 – 218 incl. 21 % VAT
- Thermocouple or sensor replacement
- €120 – 200 excl. VAT flat rate€127 – 212 incl. 6 % VAT · €145 – 242 incl. 21 % VAT
- Expansion vessel replacement
- €180 – 300 excl. VAT flat rate€191 – 318 incl. 6 % VAT · €218 – 363 incl. 21 % VAT
- Circulation pump replacement
- €250 – 450 excl. VAT flat rate€265 – 477 incl. 6 % VAT · €302 – 544 incl. 21 % VAT
- Boiler heat exchanger replacement
- €350 – 700 excl. VAT flat rate€371 – 742 incl. 6 % VAT · €424 – 847 incl. 21 % VAT
- Surcharge
- Evenings, nights, weekends and public holidays: +50 to 100 % on labour; difficult access (cramped cellar, attic): +10 to 25 €
2026 Belgian market ranges in euros excluding VAT, taken from public comparison sites; this is not our price list: your amount is quoted on the phone for your situation.
Sources
- https://blog.trustup.be/fr/prix-entretien-chaudiere-gaz/ — accessed 3 September 2026
- https://www.bobex.be/fr-be/chaudiere/entretien/ — accessed 3 September 2026
- https://www.bobex.be/fr-be/chaudiere/depannage/ — accessed 3 September 2026
- https://blog.trustup.be/fr/depannage-plombier-prix/ — accessed 3 September 2026
03 — Method
Four steps, no surprises
The price is fixed on the phone before the technician sets off for Zaventem. After that it does not change without your consent.
1
You call
Boiler type, brand if you know it, symptom or error code. We state the service or diagnosis fee before leaving.
Fee stated by phone2
Diagnosis and pricing
The engineer identifies the cause, shows it to you and states the repair amount, part included. Without your agreement he opens nothing further.
Agreement before any part3
Repair or service
Work carried out, combustion analysis, safety and pressure checks. The system is restarted in front of you.
Verified restart4
Certificate and invoice
Service certificate handed over on site, invoice with travel, labour and parts itemised, VAT at 6 % or 21 % shown.
Documents handed over on site04 — Scope
What we do at your place
One technician comes to Zaventem, one itemised invoice.
Heating is the trade where a small fault gets expensive when it is misread. Pressure that drops every week in Zaventem can come from an expansion vessel, a relief valve or a leak on a radiator: three causes, three very different prices. We refuse to guess on the phone. You get a diagnosis fee and, for each possible cause, the matching range. On site the engineer identifies the real cause, shows it to you and confirms the amount before dismantling anything. You can stop there and pay only the diagnosis. The same method applies to servicing: if the combustion analysis reveals a setting to correct, that is included; if a part needs replacing, it is priced separately. Itemised invoice, VAT at 6 % or 21 % depending on the age of the home, service certificate handed over on site.
Oil boiler service
Nozzle replacement, combustion chamber cleaning, flue sweeping where needed, burner adjustment and flue gas measurement. Mandatory annual certificate.
Boiler repairs
Error code, lockout, no hot water, burner that will not start. Fixed-fee diagnosis, then repair amount stated before any part is ordered.
Pump, vessel, valve
Replacement of the parts behind pressure and circulation faults: pump, expansion vessel, safety valve, automatic air vent. Part reference shown on the invoice.
Radiators and thermostats
Bleeding and balancing the circuit, thermostatic valve replacement, fitting a room or smart thermostat. Wiring by our electrician where needed.
Boiler replacement
When repairing no longer makes sense: written quote for a condensing boiler, removal of the old one, connection, commissioning and first certificate.
05 — Questions
Your questions before we arrive
What people in Zaventem ask before confirming.
Can the service fee quoted go up on site?
Not for the service itself: the fee depends on the boiler type you gave and includes cleaning, checks, combustion analysis and certificate. Only a flue sweep or a worn part found on site is added, and only after the engineer has shown and priced it to you. See the prices →
How long for a boiler repair in winter?
The time is given on the phone according to the day's round; a home without heating or hot water comes before a planned service. If a part must be ordered, we give the supplier lead time before you confirm, and we get the system running provisionally when it is safe to do so. Request a quote →
What guarantee covers a replaced part?
New parts are covered by the two-year legal conformity guarantee under Belgian law, plus the manufacturer's warranty where it is longer. The labour guarantee is written on the invoice. An identical fault on the same part within that period is redone without a diagnosis fee. See the prices →
Is boiler servicing charged at 6 % or 21 % VAT?
At 6 % if the property is a private dwelling over 10 years old and the invoice is in a private individual's name. That applies to servicing, repairs and boiler replacement. A newer home or business premises is at 21 %. The rate and legal wording appear on the invoice. Request a quote →
What should I prepare before the heating engineer's visit?
Clear access to the boiler and gas meter, and find the last service certificate and the manual if you have them. A WhatsApp photo of the rating plate and the error code lets us bring the right part and often avoid a second visit. See the prices →
Breakdown tonight: emergency or appointment tomorrow?
A smell of gas is an emergency for Sibelga or 112, not for a heating engineer. For a boiler that has stopped without danger, next-day working-hours appointment costs the normal fee; an evening or weekend visit carries the surcharge stated on the phone. We give you both options and the price of each. Request a quote →
Conventional gas boiler service (certificate included) in Zaventem: how much does it cost?
The Belgian market in 2026 sits between €100 and €135 excluding VAT for conventional gas boiler service (certificate included), night and weekend surcharges excluded. This is not our own rate card: your exact amount is announced on the phone before the technician leaves for Zaventem, and the invoice separates call-out, labour and parts. See the prices →
Do you really cover Zaventem (1930)?
Yes. Zaventem is in our area, Vlaams-Brabant included. The nearest municipality we also cover is Woluwe-Saint-Lambert, 4.5 km away. The slot is confirmed by phone before the technician leaves. Request a quote →
06 — On the ground
Zaventem: what changes on site
Zaventem, postcode 1930, Vlaams-Brabant. One page per municipality, with its neighbours and distances.
Zaventem is one of the municipalities we visit regularly. The price stated for Zaventem is the price on the invoice, no more, no less.
Local sheet1930 · Vlaams-Brabant
Neighbouring municipalities of Zaventem we cover
Local sheet
- Postcode
- 1930
- Region
- Vlaams-Brabant
- Brussels centre
- 9.3 km as the crow flies
Neighbouring municipalities of Zaventem we cover
- Woluwe-Saint-Lambert
- 4.5 km
- Evere
- 4.6 km
- Woluwe-Saint-Pierre
- 5.8 km
- Vilvoorde
- 6.4 km
- Schaerbeek
- 7.1 km
- Saint-Josse-ten-Noode
- 7.7 km
07 — Commitment
What will never appear on your invoice
The number one complaint about repair firms is the line nobody saw coming. Here are the ones we rule out.
Document · Commitment
- 01No boiler replacement proposed when a priced repair will do.
- 02No part ordered without its price being stated.
- 03No service invoiced without a certificate handed over.
- 04No seasonal surcharge: the October fee is the May fee.
Signed: FUSE SOLUTIONS SRL · VAT BE 1027.949.184
Contact
A quote for Zaventem? Call us.
Describe the situation in three fields. We come back to you with a slot and a price for Zaventem.
Price stated before the call-out[email protected]
We also work around Zaventem
- Heating engineer near you in Woluwe-Saint-Lambert4.5 km
- Heating engineer in Evere (1140)4.6 km
- Heating engineer — Woluwe-Saint-Pierre5.8 km
- Heating engineer in the municipality of Vilvoorde6.4 km
- Heating engineer: call-out in Schaerbeek7.1 km
- Heating engineer in Saint-Josse-ten-Noode7.7 km