108+ Free OFTEC Oil Firing (OFT101/105E) Practice Questions

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2026 Statistics

Key Facts: OFTEC Oil Firing (OFT101/105E) Exam

100

Practice Questions

OpenExamPrep

5 years

Re-assessment Cycle

OFTEC

BS 5410-1

Oil Firing Code (≤45 kW)

BSI

OFT10-101

Pressure Jet Servicing Module

OFTEC

OFT10-105E

Appliance Installation Module

OFTEC

€2.8M

Min. Public Liability (approx.)

OFTEC

OFTEC OFT10-101 and OFT10-105E are the core Ireland oil heating technician assessments for commissioning/servicing pressure-jet boilers and installing domestic oil-fired systems. Assessment combines multiple-choice theory, PAWS worksheets and practical tasks at approved centres, with five-year reassessment. Topics span BS 5410 installation rules, fire valves, tank siting, combustion tuning and heating controls. Our free bank has 100 practice questions with explanations and an AI tutor.

Sample OFTEC Oil Firing (OFT101/105E) Practice Questions

Try these sample questions to test your OFTEC Oil Firing (OFT101/105E) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 108+ question experience with AI tutoring.

1What is the primary role of OFTEC registration for oil heating technicians in the Republic of Ireland?

A.To demonstrate competence as an approved installer/servicer under the OFTEC competent persons scheme for oil-fired heating

B.To replace the need for any plumbing or craft qualification

C.To authorise technicians to work on natural gas installations without RGII registration

D.To certify oil storage tanks for export outside the EU only

Explanation: OFTEC operates a competent persons registration scheme for technicians who install, commission and service oil-fired heating equipment in the UK and Ireland. Registration confirms assessed competence against OFTEC training modules such as OFT10-101 and OFT10-105E.

2How often must OFTEC oil technician qualifications such as OFT10-101 and OFT10-105E be renewed through reassessment?

A.Every 5 years

B.Every 2 years

C.Every 10 years

D.Only once, with lifetime validity

Explanation: OFTEC states that re-assessment is required after five years for qualifications including OFT10-101 and OFT10-105E. Technicians must complete reassessment at an approved centre to maintain valid registration.

3Which OFTEC introductory course is typically recommended for new entrants to the oil heating industry before attempting OFT10-101 or OFT10-105E?

A.OFT50 (domestic oil firing introduction)

B.OFT10-201 (multi-stage pressure jet)

C.OFT10-102 (vaporising burner servicing)

D.OFT10-600A only, without any prior training

Explanation: OFTEC category 3 new entrants without recognised trade qualifications are advised to complete the OFT50 introductory course and gain supervised experience before progressing to full assessment modules such as OFT10-101 and OFT10-105E.

4What forms of assessment are used for OFTEC OFT10-101 and OFT10-105E qualifications?

A.Multiple-choice theory papers, practically assessed worksheets (PAWS), and hands-on practical assessment

B.A single open-book essay with no practical component

C.Online-only multiple choice with no centre attendance

D.Written exam only; practical skills are not assessed

Explanation: OFTEC assessment for OFT10-101 and OFT10-105E combines multiple-choice theory papers, practically assessed worksheets (PAWS), and observed practical tasks at an approved assessment centre.

5Which British Standard provides the current principal code of practice for domestic liquid fuel (oil) firing installations for space heating and hot water?

A.BS 5410-1:2019 (installations up to 70 kW output for domestic buildings)

B.BS 7671:2018

C.BS 5839-1:2017

D.BS EN 12828:2014

Explanation: BS 5410-1:2019 is the current code of practice for liquid fuel firing installations for space heating and hot water in domestic buildings, covering outputs up to 70 kW and tank storage up to 3,500 litres. It superseded BS 5410-1:2014 (which had covered installations only up to 45 kW) on 30 June 2019 and extended scope to biofuels/blends such as OFTEC's B30K.

6A technician with a nationally recognised plumbing qualification but no prior oil experience falls into which OFTEC candidate category?

A.Category 2 — related skills and experience, undertaking training and assessment at an approved centre

B.Category 1 — renewing expired OFTEC certificates only

C.Category 3 — completely new entrant with no trade background

D.Exempt from all OFTEC assessment

Explanation: OFTEC category 2 candidates hold related skills from plumbing, gas, heating or ventilation but are new to oil. They provide evidence of qualifications or experience and complete the relevant training and assessment modules at an approved centre.

7What is the scope of OFT10-105E registration for a technician in Ireland?

A.Installation of liquid fuel and bio-liquid fuelled fixed combustion appliances and systems (typically domestic/light commercial up to about 100 kW)

B.Servicing of vaporising range cookers only with no installation work

C.Design of commercial oil pipelines above 1 MW output only

D.Electrical wiring of industrial switchgear unrelated to combustion appliances

Explanation: OFT10-105E certifies competence to install liquid fuel-fired appliances such as boilers and range cookers, covering health and safety, fire valves, storage/supply, appliance siting, heating systems and energy efficiency. Training centres describe coverage for appliances and systems under about 100 kW.

8What is the scope of OFT10-101 registration?

A.Commissioning and servicing of single-stage pressure-jet oil-fired appliances

B.Installation of underground oil storage tanks only

C.Solid fuel stove installation and chimney relining only

D.Heat pump F-gas recovery and leak checking

Explanation: OFT10-101 certifies technicians to service and commission single-stage pressure-jet appliances — the type fitted to the majority of domestic oil boilers. It covers combustion analysis, burner controls, flues, ventilation and fault finding.

9When an OFTEC registered technician identifies a serious safety defect on an oil installation, what is the correct first action under OFTEC procedures?

A.Make the installation safe, inform the client, and report/document the defect in line with OFTEC risk procedures

B.Leave the appliance running and schedule a follow-up visit next month

C.Repair the defect without informing the client if the bill would increase

D.Ignore minor leaks if combustion readings appear acceptable

Explanation: OFTEC training emphasises risk identification, immediate safe isolation where required, clear client communication and proper reporting. Safety-critical defects such as leaks, blocked flues or failed fire valves must not be left unresolved.

10Which reference publications does OFTEC specify for OFT10-105E training and assessment?

A.OFTEC Technical Manual and the Domestic Heating Design Guide

B.ITIL Foundation syllabus version 5 only

C.I.S. 813 domestic gas installations standard only

D.City & Guilds electrical installation handbook exclusively

Explanation: OFTEC lists the OFTEC Technical Manual and Domestic Heating Design Guide as training materials for OFT10-105E. Technicians also apply BS 5410 and OFTEC technical publications for storage, pipework and appliance installation.

About the OFTEC Oil Firing (OFT101/105E) Exam

The OFTEC OFT10-101 and OFT10-105E assessments qualify technicians to service, commission and install domestic oil-fired heating appliances in Ireland under the OFTEC competent persons scheme. OFT10-101 covers pressure-jet burner servicing, combustion analysis, controls and fault finding. OFT10-105E covers appliance installation, fire valves, oil supply and storage checks, flues, ventilation, heating system layouts, energy efficiency and safe electrical isolation. Qualifications require reassessment every five years.

Assessment

OFT10-101 covers commissioning and servicing of single-stage pressure-jet appliances; OFT10-105E covers installation of liquid fuel-fired appliances, heating systems and energy conservation. This practice bank is 100 selected-response theory items aligned to both modules.

Time Limit

Typically 2–4 days combined training and assessment per module at an approved centre

Passing Score

Competence demonstrated across theory papers, PAWS worksheets and practical assessment (pass criteria set by approved centre)

Exam Fee

Varies by training centre; OFTEC registration uses separate annual fees via OFTEC price calculator (Oil Firing Technical Association (OFTEC))

OFTEC Oil Firing (OFT101/105E) Exam Content Outline

10%

Health, Safety & OFTEC Registration

OFTEC competent persons scheme, candidate categories, reassessment cycle, risk reporting and regional requirements

15%

Fire Valves & Oil Supply Pipework

Fire valve location, supply pipe materials, buried pipework, gravity and sub-gravity systems, filtration and leak response

15%

Oil Storage & Tanks

Domestic tank siting, bases, bunding, environmental risk, delivery fittings and boiler changeover checks

15%

Appliance Installation, Flues & Ventilation

Hearths, clearances, room-sealed and open-flue systems, condensate drains, terminal siting and spillage testing

20%

Commissioning, Servicing & Combustion

Smoke number and CO₂ analysis, nozzle and pump pressure, burner controls, fault finding and annual service procedures

10%

Heating Systems & Controls

Open-vented and sealed systems, thermostats, zoning, balancing, frost protection and boiler disconnection

Energy Efficiency

Insulation, condensing boilers, programmers, TRVs and weather compensation measures

10%

Electrical Safety & Standards

Safe isolation, prove-dead testing, BS 7671, bonding, Irish building regulations and control interlocks

How to Pass the OFTEC Oil Firing (OFT101/105E) Exam

What You Need to Know

Passing score: Competence demonstrated across theory papers, PAWS worksheets and practical assessment (pass criteria set by approved centre)
Assessment: OFT10-101 covers commissioning and servicing of single-stage pressure-jet appliances; OFT10-105E covers installation of liquid fuel-fired appliances, heating systems and energy conservation. This practice bank is 100 selected-response theory items aligned to both modules.
Time limit: Typically 2–4 days combined training and assessment per module at an approved centre
Exam fee: Varies by training centre; OFTEC registration uses separate annual fees via OFTEC price calculator

Keys to Passing

Work through all 108 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

OFTEC Oil Firing (OFT101/105E) Study Tips from Top Performers

1Memorise fire valve placement: external isolation before the pipe enters the building, with sensor at the appliance

2Know combustion commissioning sequence: correct nozzle and pump pressure, then verify smoke number (target 0–1) and CO₂ per manufacturer charts

3Review BS 5410 terminal clearances and ventilation free-area rules for open-flued and room-sealed appliances

4Understand gravity versus sub-gravity oil supply and when pipe sizing and de-aeration matter

5Practice safe electrical isolation: isolate, lock off, prove dead with live-dead-live tester checks

6Work through all 100 questions and use the AI tutor on any missed topics before your centre assessment

Frequently Asked Questions

What is the difference between OFT10-101 and OFT10-105E?

OFT10-101 certifies commissioning and servicing of single-stage pressure-jet oil appliances — the type fitted to most domestic boilers. OFT10-105E certifies installation of liquid fuel-fired appliances and systems, including fire valves, heating layouts and energy conservation measures.

How often must OFTEC oil qualifications be renewed in Ireland?

OFTEC requires re-assessment after five years for qualifications including OFT10-101 and OFT10-105E. Technicians must complete reassessment at an approved centre to maintain valid registration.

What standards govern domestic oil firing installations?

BS 5410-1:2014 is the principal code for oil firing installations up to 45 kW, applied alongside OFTEC Technical Manual guidance, the Domestic Heating Design Guide and Irish building regulations (Technical Guidance Documents).

What assessment format does OFTEC use for these modules?

Assessment combines multiple-choice theory papers, practically assessed worksheets (PAWS) and observed hands-on practical tasks at an OFTEC approved training and assessment centre.

Do I need OFT10-600A as well as 101 and 105E?

OFT10-600A covers oil storage tank installation and supply. Technicians installing or working on tanks need the relevant tank module in addition to appliance servicing (101) and installation (105E) qualifications for full scope work.

Is this practice test free?

Yes. All 100 practice questions are free with detailed explanations and access to our AI tutor for follow-up study on OFTEC oil firing topics.