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Reversible AC · Free quote

Air conditioning installation in Brussels and the surrounding area

We install your reversible air conditioning, sized for your rooms and neatly fitted: cool air in summer, extra heat in winter. Detailed quote within 24 hours, free and with no obligation.

Radialec technician levelling an indoor air conditioning unit
No obligation

Free quote within 24 hours

No obligation

Cool in summer, warm in winter

Reversible

Cool in summer, warm in winter

Capacity calculated for each room

Room by room

Capacity calculated for each room

On our work

2-year guarantee

On our work

Reversible AC

Cool in summer, warm in spring and autumn

Reversible air conditioning is an air-to-air heat pump: it cools in summer and heats in winter, room by room.

  1. 01

    During heatwaves

    A comfortable temperature during heatwaves, in the living room, the bedrooms or an office under the roof.

  2. 02

    Efficient back-up heating

    In heating mode, it generally gives out more energy than it uses: ideal for spring and autumn or a poorly heated room.

  3. 03

    Little noise indoors

    Recent indoor units are quiet; the outdoor unit's location is chosen to avoid any nuisance.

Single-split, multi-split or ducted: which system?

The right system depends on how many rooms you want to equip, the space available and the look you want. We advise you during the visit.

  • Single-split

    The most common

    One outdoor unit connected to one wall-mounted indoor unit. The simple solution for one room: bedroom, office or living room.

    • Quick to fit, budget under control
    • Ideal for one main room
    • Expandable: other rooms can follow
  • Multi-split

    A single outdoor unit for several indoor units, each set independently.

    • Several rooms, one unit on the outside wall
    • Suited to flats
    • Temperature set room by room
  • Ducted

    The unit is hidden in a false ceiling and the air comes out through discreet vents. Feasibility to be checked for each project.

    • Invisible in the room
    • Needs a false ceiling
    • Makes sense in a major renovation

Free quote

A project? Let's start by talking about it.

Tell us what you want done. If needed, a technician comes to take a look, and you get a detailed quote within 24 hours, with no obligation.

Would you rather we called you? Request a callback

Radialec technician with a tablet

Your project, step by step

Your installation, step by step

From the visit to switching it on for the first time, here's how it works.

  1. 01

    Visit and sizing

    Floor area, orientation, insulation, how each room is used: we calculate the right capacity and choose where the units go with you.

  2. 02

    Detailed quote within 24 hours

    An itemised quote, free and with no obligation. The amount on the quote is the amount on the invoice.

  3. 03

    Careful fitting

    Indoor and outdoor units, refrigerant lines, condensate drain and electrical connection.

  4. 04

    Commissioning and handover

    Test in cooling and heating mode, settings, how to use the remote control and servicing tips.

Wall-mounted indoor air conditioning unit in a living room

Fitted to last

  • Capacity calculated for each room, neither too much nor too little
  • Outdoor unit location thought through: noise, neighbours, access for servicing
  • Clean, discreet condensate drain
  • Refrigerant lines carefully fitted and tested
  • Suitable, protected electrical circuit, compliant with the RGIE
  • Trunking and holes kept to a minimum
  • Commissioning with a test in cooling and heating mode
  • Advice on use and servicing

Our installation comes with a 2-year guarantee.

Making the right choice

Co-owned building, outside wall, neighbours: what to check

In a flat, fitting an outdoor unit (outside wall, balcony, roof) usually requires the agreement of the co-owners. Depending on the location, especially on a street-facing wall, planning permission may also be needed: check with your municipality before the work.

The outdoor unit makes some noise when running. We choose a location with you that protects your comfort and your neighbours'.

Torn between this and an air-to-water heat pump to replace your boiler? Reversible air conditioning heats through the air, room by room; an air-to-water heat pump feeds your radiators or underfloor heating. We help you choose.

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

    Intervention très rapide un vendredi soir et un jour férié pour une fuite urgente sur notre chaudière. Le technicien a identifié le problème et est revenu le lendemain pour remplacer la pièce et tout remettre en service. Service efficace et réactif dans une situation d'urgence.

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

    Chauffagiste très professionnel. Il a rapidement identifié le problème sur notre chaudière et l’a réparé.

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

    Super satisfait. Je n’avais plus d’eau chaude ; le problème a été rapidement identifié et résolu. Prix correct, travail professionnel. Je ne peux que recommander Houdaifa !

    Paul B.Google review · August 2026

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 air conditioning installation

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.

The price depends on the number of rooms, the capacity needed and the setup (single-split, multi-split, length of the lines). We give you a free, detailed quote within 24 hours, and the amount on the quote is the amount on the invoice.

Where we work

Brussels and the surrounding area

We install air conditioning in the 19 municipalities of the Brussels-Capital Region and the surrounding area, in 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

Installation & renovation

Planning an installation? The quote is free.

A stuffy bedroom in summer, an office under the roof? Tell us about your project: we calculate the capacity you need and you get a detailed quote within 24 hours, with no obligation.

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

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