100+ Free Koeltechnicus Cat I Practice Questions

Prepare for the Certificaat van bekwaamheid in de koeltechniek categorie I (Flanders, Belgium) exam with instant access — no signup required.

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2026 Statistics

Key Facts: Koeltechnicus Cat I Exam

60%

Pass mark on each exam part

Vlaanderen.be / VLAREL Art. 43/6

4 parts

First-exam structure (Cat I)

Vlaanderen.be

EUR 36

2026 annual recognition retributie

Vlaanderen.be

5 years

Actualisatie-examen interval

Vlaanderen.be

5 t CO2e

HFC leak-check threshold

VEKA / EU 2024/573

Maximum relative leak loss per year

VLAREM II Art. 5.16.3.3

Flanders' Cat I koeltechnicus exam is the full-scope VLAREL certificate for handling F-gases and ODS on stationary refrigeration, air-conditioning, heat pumps and transport refrigeration units of any charge size. Candidates sit two Dutch theory papers plus refrigerant-handling and hardsoldering practicals, and must score at least 60% on each part at a recognised centre. After the certificate they register with VEKA (2026 annual retributie EUR 36) and refresh every 5 years. This bank is an English MCQ study adaptation, not an official translation or a simulation of the practicals.

Sample Koeltechnicus Cat I Practice Questions

Try these sample questions to test your Koeltechnicus Cat I exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under the Flemish VLAREL recognition, which activities may a Category I (categorie I) koeltechnicus perform on stationary refrigeration, air-conditioning or heat-pump equipment containing F-gases or ozone-depleting substances?

A.Installation, repair, maintenance, recovery, leak checking and decommissioning on equipment of any charge size

B.Leak checking only, and only if the refrigeration circuit is not opened

C.Recovery only from systems with a nominal charge below 3 kg

D.Installation and servicing only on hermetically sealed systems below 6 kg

Explanation: Flanders.be states that a Category I certificate holder may carry out all regulated tasks — installation, repair, maintenance, recovery, leak checking and decommissioning — on all koelinstallaties regardless of refrigerant charge. That is the unrestricted professional scope of the certificaat van bekwaamheid in de koeltechniek categorie I.

2According to Flanders.be, which four parts make up the first exam for the European koeltechnicus certificate?

A.Refrigeration theory, legislation theory, a refrigerant-handling practical, and a hardsoldering practical (hardsoldeerproef)

B.A single written paper and an oral interview

C.Only a practical handling test and a logbook review

D.A computer-adaptive MCQ plus a portfolio of site reports

Explanation: The official first exam consists of four onderdelen: theoretical refrigeration, theoretical legislation, a practical on handling ODS or F-gases, and a hardsoldeerproef. Category III and IV candidates are exempt from the hardsoldering part. Each part is scored separately.

3What pass mark does Flanders.be set for the first koeltechnicus exam?

A.At least 60% on each of the four parts

B.A combined 50% average, with no per-part minimum

C.70% on theory and 50% on practicals

D.80% overall, with practicals graded pass/fail only

Explanation: The technician is geslaagd only if every onderdeel scores at least 60%. A high theory mark cannot offset a failed handling or hardsoldering practical. Recognised centres typically allow a resit of the failed part only.

4Which candidates are exempt from the hardsoldeerproef on the Flemish first exam?

A.Persons seeking a Category III or Category IV certificate

B.Persons seeking a Category I certificate who already hold an EN ISO 9606 welder approval

C.All candidates older than 50 years

D.Category II candidates only

Explanation: Flanders.be and VLAREL Article 43/6 exempt Category III and IV candidates from the practical hardsoldering part, because those certificates do not authorise pipework installation that requires brazed joints. Category I and II candidates must sit the hardsoldeerproef.

5What charge-size limit applies to a Flemish Category II koeltechnicus for installation, repair, maintenance, decommissioning and recovery?

A.Nominal charge below 3 kg, or below 6 kg for hermetically sealed systems labelled as such

B.No charge-size limit, matching Category I

C.Below 5 tonnes of CO2 equivalent only

D.Below 1 kg of any HFO refrigerant

Explanation: Flanders.be copies the EU Category II limit: work is allowed only on systems with a nominal refrigerant charge under 3 kg, or under 6 kg if the system is hermetically sealed and labelled as such. Category II leak checks must not open the F-gas or ODS circuit.

6What work does a Flemish Category III certificate authorise?

A.Recovery of F-gases from systems below 3 kg nominal charge (or below 6 kg if hermetically sealed and labelled)

B.All installation and leak-checking work on any size of plant

C.Non-intrusive leak checks only, with no recovery

D.Brazing of new copper pipework on industrial racks

Explanation: Category III is a recovery-only certificate for small charges: under 3 kg, or under 6 kg for labelled hermetic systems. It does not authorise installation, circuit-breaking leak checks, or hardsoldering, which is why Cat III candidates skip the hardsoldeerproef.

7What is the defining limit of a Flemish Category IV certificate?

A.Statutory leak checks only, and only if the F-gas or ODS circuit is not opened

B.Recovery of refrigerant from any size of plant

C.Installation of split air-conditioners up to 12 kW

D.All Category I tasks on transport refrigeration units only

Explanation: Flanders.be states that Category IV holders may perform the legally required lekdichtheidscontroles provided the refrigeration circuit containing F-gases or ODS is not opened. They may not recover, install, or break into the circuit.

8How often must a recognised Flemish koeltechnicus pass the actualisatie-examen to keep using the recognition?

A.Every 5 years at a recognised training centre

B.Every 7 years, matching Regulation (EU) 2024/573 only

C.Annually, in the same month as the retributie invoice

D.Once, at first recognition; no refresh is required

Explanation: Flanders.be requires a 5-jaarlijks actualisatie-examen at a recognised opleidingscentrum. Missing the date on the recognition certificate causes the recognition to lapse by operation of law. EU 2024/573 also sets a 7-year EU refresh duty, but the Flemish recognition currently still uses the 5-year actualisatie.

9What does the Flemish actualisatie-examen consist of, and what is its pass mark?

A.A theoretical exam on relevant environmental legislation and refrigeration technology, passed at 60%

B.A repeat of all four first-exam parts, including hardsoldering, passed at 50%

C.An employer-signed competence statement with no sitting

D.A 3-hour refrigerant-handling practical only, passed at 80%

Explanation: Flanders.be states that the actualisatie-examen is theory only — relevant milieuwetgeving and koeltechniek technology — and is passed at minstens 60%. It is shorter than the first exam and does not re-run the handling or hardsoldeerproef.

10What annual supervision retributie does Flanders.be publish for a recognised koeltechnicus in calendar year 2026?

A.EUR 36, invoiced by post to the technician's official home address

B.EUR 35, emailed to the employer

C.EUR 150, paid only in the year of the actualisatie-examen

D.No fee; recognition is free after the first exam

Explanation: The Dutch Flanders.be recognition page states that the 2026 annual retributie is 36 euro, index-adjusted each year, invoiced by post in January to the natural person at the official home address — not to the employer. Non-payment leads to suspension and then lapse.

About the Koeltechnicus Cat I Exam

The certificaat van bekwaamheid in de koeltechniek categorie I is Flanders' full-scope refrigeration-technician exam for work on stationary refrigeration, air-conditioning and heat-pump systems, and on refrigeration units of refrigerated trucks and trailers, that contain fluorinated greenhouse gases or ozone-depleting substances. Category I authorises installation, maintenance, repair, recovery, leak checking and decommissioning on equipment of any charge size. The sitting is in Dutch at a recognised centre. Environmental recognition in Belgium is regional: this exam and the subsequent erkenning as koeltechnicus are the Flemish VLAREL route. Wallonia (AWAC) and Brussels Environment run separate regional recognitions on the same European certificate. Holders of a certificate from another region or EU Member State must still register with VEKA before working in Flanders, and must pass the Flemish actualisatie-examen every 5 years.

Assessment

The official first exam for the certificaat van bekwaamheid in de koeltechniek is mixed: (1) theory of refrigeration, (2) theory of refrigeration legislation and Dutch terminology, (3) practical refrigerant handling with F-gases or ODS, and (4) a hardsoldeerproef. Category III and IV candidates are exempt from hardsoldering. Each part must be passed at 60%. After the certificate, the technician registers via Mijn VLAREL-erkenning to obtain the Flemish recognition. This bank is an English-language MCQ study adaptation of the knowledge in those papers and practicals — not an official translation, not a Dutch sitting, and not a substitute for the handling or hardsoldering tests.

Time Limit

Typically one exam day of about 8 hours (recognised centres: max 1 hour for the theory exam as a whole, covering both papers, plus 3 hours refrigerant handling and 3 hours hardsoldering; centres set the timetable)

Passing Score

At least 60% on each of the four first-exam parts. The five-year actualisatie-examen is theory only and is passed at 60%.

Exam Fee

Set by the recognised training centre. Published 2026 Cat I exam-only fees include about EUR 790–890 (UCLL) and EUR 1,140 (Syntra AB). The Flemish recognition then carries a 2026 annual supervision retributie of EUR 36. (Vlaams Energie- en Klimaatagentschap (VEKA), with examinations organised by recognised VLAREL koeltechniek training centres)

Koeltechnicus Cat I Exam Content Outline

20%

VLAREL recognition and certificate categories

Cat I–IV scopes, four first-exam parts, 60% per-part pass, hardsoldeerproef exemption, Mijn VLAREL-erkenning, 5-year actualisatie-examen, EUR 36 (2026) retributie

15%

F-gas regulation, GWP and environmental impact

EU 2024/573, GWP/CO2e, HFC and HFO leak-check thresholds, GWP ≥ 2500 servicing bans, 2024/2215 A1–E mapping

12%

Leak checking, VLAREM logbook and leak-loss rules

5/50/500 t CO2e frequencies, 5% relative leak-loss cap, 14-day repair, one-month recheck, two-year 10% decommissioning, logboek

15%

Refrigerant handling, recovery and charging

Venting ban, 80% recovery-cylinder fill, nitrogen tightness testing, vacuum/dehydration, liquid vs vapour charging, recycle vs reclaim

15%

Refrigeration cycle and thermodynamics

Vapour-compression cycle, superheat/subcooling, COP, flash gas, zeotropic glide, charge-fault symptoms, log p-h diagram

13%

System components and servicing

Compressors, condensers, evaporators, TEV/MOP, filter-driers, sight glasses, oil separators, pump-down, crankcase heaters

10%

Installation, brazing and pressure testing

OFN-purged hardsoldering, ACR copper, silver filler, 1.1× strength test, two-stage vacuum pumps, EN 378 hermetic preference

How to Pass the Koeltechnicus Cat I Exam

What You Need to Know

Passing score: At least 60% on each of the four first-exam parts. The five-year actualisatie-examen is theory only and is passed at 60%.
Assessment: The official first exam for the certificaat van bekwaamheid in de koeltechniek is mixed: (1) theory of refrigeration, (2) theory of refrigeration legislation and Dutch terminology, (3) practical refrigerant handling with F-gases or ODS, and (4) a hardsoldeerproef. Category III and IV candidates are exempt from hardsoldering. Each part must be passed at 60%. After the certificate, the technician registers via Mijn VLAREL-erkenning to obtain the Flemish recognition. This bank is an English-language MCQ study adaptation of the knowledge in those papers and practicals — not an official translation, not a Dutch sitting, and not a substitute for the handling or hardsoldering tests.
Time limit: Typically one exam day of about 8 hours (recognised centres: max 1 hour for the theory exam as a whole, covering both papers, plus 3 hours refrigerant handling and 3 hours hardsoldering; centres set the timetable)
Exam fee: Set by the recognised training centre. Published 2026 Cat I exam-only fees include about EUR 790–890 (UCLL) and EUR 1,140 (Syntra AB). The Flemish recognition then carries a 2026 annual supervision retributie of EUR 36.

Keys to Passing

Work through all 100 available questions
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Koeltechnicus Cat I Study Tips from Top Performers

1Memorise Cat I–IV scopes: I any size all tasks; II under 3 kg (6 kg hermetic) and non-intrusive leak checks; III recovery only on small systems; IV leak checks without breaking the circuit.

2You must pass every part at 60%. Centres typically set two 20-question papers, so 12/20 correct is the theory bar on each paper.

3Learn VEKA's GWP table and the formula tonnes CO2e = kg × GWP ÷ 1000, then the 5 / 50 / 500 t leak-check bands (halved with a working leak-detection system).

4Drill VLAREM leak-loss arithmetic: L = (top-up kg / nominal kg) × 100%, 5% annual cap, 14-day repair, recheck within one month but not on the repair day, and two consecutive years above 10% triggering decommissioning.

5Practise nitrogen tightness testing, OFN-purged brazing, two-stage vacuum to remove air and moisture, and never using water or refrigerant as the strength-test medium.

6Complete all 100 practice questions and review every miss with the AI tutor. This bank is English MCQ study material — sit the official papers in Dutch and complete both practicals at a recognised centre.

Frequently Asked Questions

What is the Flemish koeltechnicus Category I exam?

It is the certificaat van bekwaamheid in de koeltechniek categorie I, sat at a VEKA-recognised training centre under VLAREL. Category I authorises all F-gas and ODS work — installation, maintenance, repair, recovery, leak checking and decommissioning — on stationary refrigeration, air-conditioning, heat pumps and transport refrigeration units of any charge size.

Is this a single Belgium-wide refrigeration exam?

No. Environmental recognition is regional. This exam and the subsequent erkenning as koeltechnicus are the Flemish VLAREL route. Wallonia (AWAC) and Brussels Environment issue their own recognitions. An EU certificate from another region or Member State still requires VEKA registration before work in Flanders.

What is the official pass mark?

Flanders.be and VLAREL require at least 60% on each of the four first-exam parts. Failing one part means resitting that part. The five-year actualisatie-examen is a single theory paper passed at 60%.

How much does the exam cost in 2026?

There is no single Flemish fee. Recognised centres publish their own Cat I exam fees; 2026 examples include about EUR 790–890 at UCLL and EUR 1,140 at Syntra AB. After recognition, VEKA invoices a 2026 annual supervision retributie of EUR 36 to the technician's home address.

In what language is the official exam delivered?

The official papers test refrigeration legislation and Nederlandstalige terminologie, so the sitting is in Dutch. This practice bank is an English-language MCQ study adaptation, not an official translation and not a simulation of the Dutch exam environment.

Does this bank replace the practicals?

No. The official Cat I exam includes a refrigerant-handling practical (about 3 hours) and a hardsoldeerproef (about 3 hours). These MCQs teach the safety, sequence, diagnosis and legal knowledge those practicals assess, but they cannot certify brazing or handling skill.