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Hot water · Servicing

Water heater servicing in Brussels

Brussels water is hard: without servicing, your water heater scales up, uses more energy and eventually gives up. Our technicians descale it and check the anode and the safety valve, for reliable hot water all year round.

Scaled-up anode removed from an electric water heater
Gas water heater service

From €129 VAT incl.

Gas water heater service

Usually within 24 hours

Quick slot

Usually within 24 hours

Electric water heater, cylinder, combi boiler

All types

Electric water heater, cylinder, combi boiler

On our work

2-year guarantee

On our work

Why service your water heater?

In Brussels, tap water is hard: limescale settles on the heating element and at the bottom of the tank, year after year.

  1. 01

    Lower consumption

    A scaled-up heating element heats less well: your water heater runs longer for the same amount of hot water.

  2. 02

    A longer life

    The anode protects the tank against corrosion. Replaced in time, it prevents the leak that means changing the whole appliance.

  3. 03

    More safety

    The safety valve protects the tank against overpressure. It still has to work: we test it at every service.

Scaled-up water heater element compared with a new one

What the service includes

  • Partial or full draining of the tank, depending on its condition
  • Descaling the heating element and removing deposits
  • Checking the anode, with a replacement suggested if it's worn
  • Testing the safety valve and relief valve
  • Checking the thermostat and the set temperature
  • Checking the connections and seals
  • Checking the power supply (electric water heater)
  • Advice on settings to limit limescale and consumption

A part to replace (anode, heating element, safety valve)? You get its price before the work.

A question before you go ahead?

Let's talk about your boiler.

Repair or replace? Gas or heat pump? Ask a technician over the phone: we answer 7 days a week. No time right now? Leave your number and we'll call you back.

A question before booking? WhatsApp · Request a callback

Radialec technician with a tablet

Which appliance do you have?

The servicing depends on how your hot water is produced. If in doubt, a photo of the appliance is enough for us to point you in the right direction.

  • Electric water heater

    A tank of water heated by an electric element. It's the one that suffers most from limescale.

    • Descaling the heating element
    • Checking the anode
    • Testing the safety valve
  • Cylinder linked to the boiler

    The water in the cylinder is heated by your boiler through a coil. It's serviced like a water heater.

    • Checking the anode and the safety valve
    • Checking the sensor and the coil
  • Combi boiler

    No storage: the water is heated on demand by the boiler itself.

    • Checked during the boiler service
    • Descaling the hot water exchanger if needed

Signs your water heater needs a service

  1. 01

    Lukewarm water, or water that cools quickly

    The scaled-up heating element can no longer heat the whole tank.

  2. 02

    Kettle-like noises

    Crackling or whistling while it heats: limescale is building up at the bottom of the tank.

  3. 03

    Cloudy or rusty water

    A possible sign of a worn anode and a tank starting to corrode.

  4. 04

    Safety valve running all the time

    A little water while it heats is normal; a constant flow isn't.

  5. 05

    Electricity bill going up

    A clogged water heater uses more for the same comfort.

  6. 06

    More than 2 years without a service

    With water as hard as in Brussels, a service every 1 to 2 years is generally recommended.

Our prices

Water heater servicing prices

Prices include VAT. For anything outside these fixed prices, we tell you the price before we start.

  • Gas water heater service€129VAT incl.
  • Electric water heater service€220VAT incl.

Our customers

What our customers say.

Reviews shown word for word, in their original language (French).

5.0

More than 30 Google reviews

Read all reviews
  • Rating: 5 out of 5

    Très satisfait de l’entretien de ma chaudière. Service professionnel et prix correct.

    Elodie M.Google review · September 2026
  • Rating: 5 out of 5

    Je suis très satisfait du service d'entretien de chaudière que j'ai reçu. Le technicien a été professionnelle, ponctuelle et a effectué un travail de qualité. Je recommande vivement leurs services à tous ceux qui cherchent un entretien fiable et efficace.

    Humic H.Google review · 2025
  • Rating: 5 out of 5

    J'ai contacté pour faire l'entretient de ma chaudière je suis très content du résultat. Très bon service rapide de qualité. Je recommande.

    Bogdan M.Google review · 2025

Technicians certified in all three regions

  • Detailed quote within 24 hours
  • Work to Belgian standards (EPB, RGIE)
  • One number for heating, electrics and plumbing
  • Brussels Environment
  • VEKA – Flemish Energy and Climate Agency
  • Wallonia Environment

Frequently asked questions

Frequently asked questions about water heater servicing

Can't find your question? Ask it on WhatsApp, with a photo if that helps, or leave your number and we'll call you back.

A gas water heater service costs €129 VAT incl. and an electric water heater service €220 VAT incl.. If a part needs replacing, you get its price before the work.

Where we work

Brussels and the surrounding area

The 19 Brussels municipalities and part of Flemish Brabant and Walloon Brabant.

Brussels-Capital Region

  • Anderlecht
  • Auderghem
  • Berchem-Sainte-Agathe
  • City of Brussels
  • Etterbeek
  • Evere
  • Forest
  • Ganshoren
  • Ixelles
  • Jette
  • Koekelberg
  • Molenbeek-Saint-Jean
  • Saint-Gilles
  • Saint-Josse-ten-Noode
  • Schaerbeek
  • Uccle
  • Watermael-Boitsfort
  • Woluwe-Saint-Lambert
  • Woluwe-Saint-Pierre

Flemish Region

  • Sint-Genesius-Rode
  • Wezembeek-Oppem
  • Kraainem
  • Linkebeek
  • Drogenbos
  • Tervuren
  • Overijse
  • Hoeilaart
  • Meise
  • Grimbergen
  • Keerbergen
  • Tremelo
  • Oud-Heverlee

Walloon Region

  • Lasne
  • Waterloo
  • La Hulpe
  • Rixensart
  • Braine-l'Alleud
  • Chaumont-Gistoux
  • Grez-Doiceau
  • Beauvechain
  • Incourt

Servicing & checks

Water heater struggling? Let's book a visit (before) it breaks down.

Electric water heater, cylinder linked to the boiler or combi boiler? Book an appointment: the technician descales, checks and tells you what state your appliance is in. Price known in advance.

No time right now? Request a callback · Message us on WhatsApp

Smiling Radialec technician
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