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Exam guides / G3 Gas Technician 3

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Ontario Gas Technician 3 (G3)

TSSA's Fuels passing grade for Gas Technician 3 is 75%. The written exam is multiple choice, open book, and up to 3.5 hours. TSSA does not publish a fixed question count.

Ontario TSSA certificate for Gas Technician 3. This is not a Red Seal exam.

Your province

Status
Open checks
Last checked
15 October 2026

Exam facts

Format

TSSA does not publish a fixed question count for Gas Technician 3 (G3). Its guide states only that typical exams range from 50 to 165 questions depending on the certificate type.

Questions

TODO

TSSA does not publish a fixed question count for Gas Technician 3 (G3). Its guide states only that typical exams range from 50 to 165 questions depending on the certificate type.

Question style

TODO

All questions are multiple choice.

Time

TODO

Up to 3.5 hours (210 minutes) for the Gas Technician 3 (G3) written exam.

Pass mark

TODO

75 percent, the Fuels program area passing grade, applies to the Gas Technician 3 (G3) exam.

TO-CONFIRM. TSSA does not publish a fixed question count for Gas Technician 3 (G3). Its guide states only that typical exams range from 50 to 165 questions depending on the certificate type.

Fees

TSSA's natural gas fee schedule lists a Challenge Examination at $255.50 and an Other Examination at $89 (from May 1, 2026, plus HST). TSSA doesn't say which line applies to G3 or G2, so confirm the amount when you book.

Ontario

Certification examination

Checked

TSSA gas technician examination

No dollar total

Every examination and every re-write is billed. An exam re-write counts as a separate examination and is charged as one, whether the candidate passes or fails, and all prepaid fees are non-refundable. TSSA's natural gas fee schedule lists a Challenge Examination at $255.50 and an Other Examination at $89 (from May 1, 2026, plus HST). TSSA doesn't say which line applies to G3 or G2, so confirm the amount when you book.

TSSA Natural Gas and Hydrogen fee schedule

Open the fee and rewrite calculator

Eligibility

Ontario

  • At least 75% on the TSSA certification examination and at least 75% in each curriculum module, with 75% or higher on the practical evaluation.

Rewrite rules

Ontario

  • Every examination and every re-write is billed. An exam re-write counts as a separate examination and is charged as one, whether the candidate passes or fails, and all prepaid fees are non-refundable.
  • Three attempts. Ontario Regulation 215/01 section 5 says a candidate who fails the certification examination on three attempts must take an accredited training program before being permitted to retake it.
  • After three failed attempts you must complete an accredited program that includes theory and practical training. A 'challenge' or 'pre-exam' course does not count as an accredited program, and you may not challenge a certificate after failing the examination for that same certificate.
  • Free to cancel 22 or more days before the exam date. Cancelling less than 22 days before forfeits the exam fee. Cancel or reschedule through Prometric; only one reschedule is allowed.

Allowed references

The written exam is open book. Candidates bring their own permitted reference materials.

  • Technical Standards and Safety Act 2000, all Fuels Regulations and Code Adoption Documents, and CSA-B149.1. Those are the permitted references TSSA lists for Gas Technician 2 and 3.

Syllabus headings to study

Names of the public syllabus sections, so you can follow the official PDF. This is not a copy of the syllabus.

Act and regulations

  • The permitted set is the Act, the Fuels Regulations, and the Code Adoption Documents.

CSA B149.1

  • Named by TSSA as a permitted reference for Gas Technician 2 and 3. This site does not quote the standard.

Study plan

Pick a pace

Both plans were written here. They are not issued by SOPEEC, Red Seal, or a provincial regulator. Ticks stay in this tab only. Put them on a calendar.

0 / 0 tasks

A pace for an open-book Fuels exam. Not issued by TSSA.

  1. Week 01Work through the permitted references you are allowed to bring
  2. Week 02Work through the permitted references you are allowed to bring
  3. Week 03Work through the permitted references you are allowed to bring
  4. Week 04Work through the permitted references you are allowed to bring
  5. Week 05Work through the permitted references you are allowed to bring
  6. Week 06Work through the permitted references you are allowed to bring
  7. Week 07Work through the permitted references you are allowed to bring
  8. Week 08A timed sitting of up to 3.5 hours

Practice

Practice questions coming

No practice questions are published for this exam yet. Nothing will be added until it has been reviewed. This page is not an exam paper.

FAQ

FAQ

How many questions are on the exam?

TSSA does not publish a fixed question count for Gas Technician 3 (G3). Its guide states only that typical exams range from 50 to 165 questions depending on the certificate type.

What does the exam cost?

This page does not publish a fee amount. The TSSA schedule does not name a G3 or G2 line.

Official sources

Last checked 15 October 2026.

What this page could not confirm

TO-CONFIRM. TSSA does not publish a fixed question count for Gas Technician 3 (G3). Its guide states only that typical exams range from 50 to 165 questions depending on the certificate type.