FRNLEN
0486 78 54 91
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FRNLEN

For homes, residential buildings and industry, across Belgium.

Approved heating engineers, 7 days a week.

We service, repair and replace gas and oil boilers. We also install air conditioning, heat pumps and water softeners. The phone is answered every day from 8 am to 7 pm, weekends included.

Call 0486 78 54 91Request a quote

Something to show us? Send a photo of the boiler on WhatsApp

Commercial boiler room with two red and anthracite Remeha Gas 620 Ace boilers, a yellow gas pipe and expansion vessels
  • Gas and oil approvedin all three regions
  • Approved for refrigerationcategory 1
  • Every brandspecialists in Remeha, Viessmann, Buderus

Your situation

Tell us what is wrong.

Pick the line that looks like your situation: each one leads to the page for that service.

Your situation is not on the list? Describe it in a few lines

We work on every brand. Starting prices excluding VAT. The quote gives the exact price for the appliance and the job.

Before and after

Two old floor-standing boilers replaced by two wall-hung boilers.

The old boilers vented through flexible flue pipes, with insulation held on by tape. We fitted two Vaillant ecoTEC pro condensing boilers with filters on the system, then set them up with a combustion analyser.

See our work
Two old floor-standing boilers in a basement, flexible aluminium flue pipes and insulation held with tape
Before
New Vaillant ecoTEC pro wall-hung boiler with a combustion analyser connected and filters on the pipes
After

After every service

You keep a certificate and the readings.

We analyse the combustion and record the condition of the appliance. Those readings go on the certificate your region asks you to keep, as in this example.

Service certificateExample

Condensing gas wall-hung boiler

Detached house · periodic service

Appliance
Condensing gas wall-hung boiler, 25 kW, commissioned in 2016.
Combustion
CO 28 ppm · CO₂ 9.0 % · efficiency 97.6 %
Within manufacturer values
Cleaning
Burner, heat exchanger and condensate trap cleaned.
Safety
System pressure 1.5 bar, expansion vessel recharged.
Compliant
Next time
Burner door seal to be replaced at the next service.
To monitor

Example content. The certificate template depends on the region and the appliance.

Our services

Heat, cold and water.

These trades often overlap: replacing a boiler raises the question of water treatment, and a heat pump raises the question of the boiler it works with.

All services
New Vaillant ecoTEC pro wall-hung boiler with a combustion analyser connected and filters on the pipes
Heating

Servicing and repair

Servicing with combustion analysis and certificate, repair of gas and oil boilers of every brand.

Two Vaillant ecoTEC pro wall-hung boilers installed side by side in a painted brick basement
Heating

Installation and replacement

Replacing an old boiler with a condensing boiler: connections, flue and commissioning.

Daikin outdoor unit on supports on a flat roof, refrigerant lines under a cover, houses and trees in the background
Cooling

Air conditioning and heat pumps

Air conditioning and air-to-air and air-to-water heat pumps: installation, commissioning and servicing by an approved refrigeration company.

Copper pipe removed from a boiler, almost fully clogged with sludge and scale
Water

Water treatment

Water softeners, filters and system flushing for homes, water treatment for boiler rooms and industrial circuits.

Control panels of two Remeha Gas 620 Ace boilers and a yellow gas pipe in a commercial boiler room
Heating

Commercial and industrial boiler rooms

High-output boilers for residential blocks, commercial buildings and industry: installation, servicing, repair and water treatment.

Something else

Your need is not on the list?

Describe it in a few lines and we will tell you whether we can take it on.

Request a quote

Approvals

An approved heating and refrigeration company.

Installing or servicing a gas or oil boiler, or any equipment containing refrigerant, requires an approved professional. Our gas and oil approvals cover all three regions.

  • Approved heating engineerType 1 approval.
  • Gas (G1) and heating oilApprovals valid in Brussels, Flanders and Wallonia.
  • Approved refrigeration engineerCategory 1: air conditioning and heat pumps.

Specialists in Remeha, Viessmann and Buderus. We also work on other brands.

More about the company

First contact

Describe the breakdown or the project.

A phone call is often enough. For a quote, a few lines and a photo of the appliance’s rating plate save us time.

Call 0486 78 54 91Request a quote