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 · Flemish 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
- FR · NL · EN
DispatchSector: Zaventem (1930)
27minZaventem · 29.3 km from our offices · drive time without heavy traffic · The arrival time depends on where the team is and on traffic; it is given to you by phone.
StatusTeam reachable by phone and WhatsApp
TimingTime slot and price confirmed by phone before the technician leaves
HeatingZaventem · 1930
In short — Heating engineer in Zaventem
Calls to 02 886 10 49 are answered 24 hours a day, 7 days a week, public holidays included, for heating engineer interventions in Zaventem 1930. FUSE SERVICES carries out repairs, maintenance, and diagnostics across the municipality. A heating engineer takes details directly over the phone, confirms intervention terms before setting out, and provides required documentation upon completion.
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.
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.
| Job | Indicative price |
|---|---|
| Call-out (flat fee)excl. parts | €24 – 48 incl. 21 % VAT flat rate€20 – 40 excl. VAT · €21 – 42 incl. 6 % VAT |
| Heating engineer hourly rateexcl. parts | €39 – 85 incl. 21 % VAT / h€32 – 70 excl. VAT · €34 – 74 incl. 6 % VAT |
| Conventional gas boiler service (certificate included)excl. parts | €121 – 163 incl. 21 % VAT flat rate€100 – 135 excl. VAT · €106 – 143 incl. 6 % VAT |
| Condensing gas boiler serviceexcl. parts | €163 – 206 incl. 21 % VAT flat rate€135 – 170 excl. VAT · €143 – 180 incl. 6 % VAT |
| Oil boiler service (nozzle and sweep included) | €182 – 302 incl. 21 % VAT flat rate€150 – 250 excl. VAT · €159 – 265 incl. 6 % VAT |
| Flue sweepingexcl. parts | €85 – 121 incl. 21 % VAT flat rate€70 – 100 excl. VAT · €74 – 106 incl. 6 % VAT |
| Fault diagnosis (call-out + 1 h)excl. parts | €157 – 266 incl. 21 % VAT flat rate€130 – 220 excl. VAT · €138 – 233 incl. 6 % VAT |
| Bleeding and balancing the radiator circuitexcl. parts | €121 – 218 incl. 21 % VAT flat rate€100 – 180 excl. VAT · €106 – 191 incl. 6 % VAT |
| Thermocouple or sensor replacement | €145 – 242 incl. 21 % VAT flat rate€120 – 200 excl. VAT · €127 – 212 incl. 6 % VAT |
| Expansion vessel replacement | €218 – 363 incl. 21 % VAT flat rate€180 – 300 excl. VAT · €191 – 318 incl. 6 % VAT |
| Circulation pump replacement | €302 – 544 incl. 21 % VAT flat rate€250 – 450 excl. VAT · €265 – 477 incl. 6 % VAT |
| Boiler heat exchanger replacement | €424 – 847 incl. 21 % VAT flat rate€350 – 700 excl. VAT · €371 – 742 incl. 6 % VAT |
| Surcharge | Evenings, nights, weekends and public holidays: +50 to 100 % on labour; difficult access (cramped cellar, attic): +10 to 25 € |
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.
Across an area of 27.6 km2 home to 35184 inhabitants, local heating engineer requests in Zaventem range from condensing gas boiler service to circulation pump replacement or thermocouple or sensor replacement. When calling, a resident should specify the type of equipment present, whether an oil boiler service or flue sweeping is needed, or if an expansion vessel replacement is indicated. No boiler replacement is proposed when a priced repair will do, and no part is ordered without its price being stated.
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. Connection to the existing circuit 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 →
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. Request a quote →
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. See the prices →
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. Request a quote →
Do you really cover Zaventem (1930)?
Yes. Zaventem is in our area, Flemish Brabant included. The nearest municipality we also cover is Kortenberg, 4.2 km away. The slot is confirmed by phone before the technician leaves. See the prices →
Can I reach a heating engineer in Zaventem at night, on Sunday, or on public holidays?
Yes, our phone line 02 886 10 49 is answered 24 hours a day, 7 days a week, public holidays included. A heating engineer remains reachable for any call-out in Zaventem during these periods. Request a quote →
How is the price agreed before a heating engineer attends my home?
The amount is stated on the phone before the technician leaves for your address. Furthermore, our written policy holds that no part is ordered without its price being stated, and no boiler replacement is proposed when a priced repair will do. See the prices →
What does a heating engineer fault diagnosis cover?
Fault diagnosis covers a call-out plus 1 h of labour on site to inspect your installation. During this time, the heating engineer identifies system defects such as issues requiring thermocouple or sensor replacement or circulation pump replacement. Request a quote →
Does your heating engineer team travel to Zaventem?
Yes, our heating engineer service covers every municipality in Flemish Brabant, including Zaventem. The municipality lies 14.8 km in a straight-line distance from our office in Drogenbos, Chaussée de Ruisbroek 257. See the prices →
Which neighbouring covered municipalities can be included alongside Zaventem?
Nearby covered municipalities include Kortenberg at 4.2 km, Machelen at 4.3 km, Kraainem at 4.3 km, Woluwe-Saint-Lambert at 4.5 km, Evere at 4.6 km, and Steenokkerzeel at 4.9 km. All belong to the 63 covered municipalities in the zone. Request a quote →
06 — On the ground
Zaventem: what changes on site
Zaventem, postcode 1930, Flemish Brabant. One page per municipality, with its neighbours and distances.
In the municipality of Zaventem, coverage includes postcodes 1930, 1931, 1932, 1933, and 1940, encompassing Nossegem, Sterrebeek, and Sint-Stevens-Woluwe. The territory sits 14.8 km in a straight-line distance from our office in Drogenbos and 9.3 km from the centre of Brussels. Within Flemish Brabant, where 63 covered municipalities form the complete zone, operations also reach neighbouring Kortenberg at 4.2 km, Machelen at 4.3 km, Kraainem at 4.3 km, and Evere at 4.6 km.
Local sheet1930 · Flemish Brabant
Neighbouring municipalities of Zaventem we cover
- Heating engineer for Kortenberg and around 4.2 km
- Heating engineer in Machelen (1830) 4.3 km
- Heating engineer — Kraainem 4.3 km
- Heating engineer in the municipality of Woluwe-Saint-Lambert 4.5 km
- Heating engineer: call-out in Evere 4.6 km
- Heating engineer in Steenokkerzeel 4.9 km
Localities of Zaventem
- Nossegem 1930
- Sterrebeek 1933
- Sint-Stevens-Woluwe 1932
Local sheet
- Postcode
- 1930
- Region
- Flemish Brabant
- Brussels centre
- 9.3 km as the crow flies
Neighbouring municipalities of Zaventem we cover
- Kortenberg
- 4.2 km
- Machelen
- 4.3 km
- Kraainem
- 4.3 km
- Woluwe-Saint-Lambert
- 4.5 km
- Evere
- 4.6 km
- Steenokkerzeel
- 4.9 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
Appointment
Emergency or appointment in Zaventem
If it is urgent, call. If it can wait, pick a day and time in Zaventem: the slot is confirmed straight away.
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-outinfo@fuse-services.be
We also work around Zaventem
- Heating engineer for Kortenberg and around4.2 km
- Heating engineer in Machelen (1830)4.3 km
- Heating engineer — Kraainem4.3 km
- Heating engineer in the municipality of Woluwe-Saint-Lambert4.5 km
- Heating engineer: call-out in Evere4.6 km
- Heating engineer in Steenokkerzeel4.9 km