G3 (Gas Technician Level 3 Certification) Test Guide
Prepare for the G3 Gas Technician Level 3 certification exam with free practice tests covering gas systems, appliance installation, safety codes, and TSSA.

The Gas Technician 3 (G3) license is mandatory for anyone working under supervision on gas-fired equipment in Ontario. Achieving your G3 gas technician status requires completing an accredited Gas Technician 3 course and passing the TSSA G3 test. This certification validates your understanding of the CSA B149.1 Natural Gas and Propane Installation Code.

G3 Practice Test Questions
Prepare for the G3 - Gas Technician Level 3 Certification exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
G3 Certification Requirements
G3 Exam Questions covering Certification Requirements. Master G3 Test concepts for certification prep.
G3 Examination Process
Free G3 Practice Test featuring Examination Process. Improve your G3 Exam score with mock test prep.
G3 Safety and Compliance Standards
G3 Mock Exam on Safety and Compliance Standards. G3 Study Guide questions to pass on your first try.
G3 Training Program Content
G3 Test Prep for Training Program Content. Practice G3 Quiz questions and boost your score.
G3 Codes, Acts, and Regulations
G3 Questions and Answers on Codes, Acts, and Regulations. Free G3 practice for exam readiness.
G3 Combustion and Venting Principles
G3 Mock Test covering Combustion and Venting Principles. Online G3 Test practice with instant feedback.
G3 Core Concepts and Principles
Free G3 Quiz on Core Concepts and Principles. G3 Exam prep questions with detailed explanations.
G3 - Gas Technician Level 3 Appliance Inst...
G3 Practice Questions for G3 - Gas Technician Level 3 Appliance Installation and Service. Build confidence for your G3 certification exam.
G3 - Gas Technician Level 3 Appliance Inst...
G3 Test Online for G3 - Gas Technician Level 3 Appliance Installation and Service Questions and Answers. Free practice with instant results and feedback.
G3 - Gas Technician Level 3 Pressure Regul...
G3 Study Material on G3 - Gas Technician Level 3 Pressure Regulation and Control. Prepare effectively with real exam-style questions.
G3 - Gas Technician Level 3 Pressure Regul...
Free G3 Test covering G3 - Gas Technician Level 3 Pressure Regulation and Control Questions and Answers. Practice and track your G3 exam readiness.
G3 - Gas Technician Level 3 Codes, Acts, a...
G3 Exam Questions covering - Gas Technician Level 3 Codes, Acts, and Regulations. Master G3 Test concepts for certification prep.
G3 - Gas Technician Level 3 Combustion and...
Free G3 Practice Test featuring - Gas Technician Level 3 Combustion and Venting Principles. Improve your G3 Exam score with mock test prep.
G3 - Gas Technician Level 3 Piping and Tub...
G3 Mock Exam on - Gas Technician Level 3 Piping and Tubing Systems. G3 Study Guide questions to pass on your first try.
G3 - Gas Technician Level 3 Properties of ...
G3 Test Prep for - Gas Technician Level 3 Properties of Fuel Gases. Practice G3 Quiz questions and boost your score.
G3 - Gas Technician Level 3 Tools and Test...
G3 Questions and Answers on - Gas Technician Level 3 Tools and Testing Instruments. Free G3 practice for exam readiness.
G3 - Gas Technician Level 3 Workplace Safe...
G3 Mock Test covering - Gas Technician Level 3 Workplace Safety and PPE. Online G3 Test practice with instant feedback.
G3 Piping and Tubing Systems
Free G3 Quiz on Piping and Tubing Systems. G3 Exam prep questions with detailed explanations.
G3 Professional Standards and Ethics
G3 Practice Questions for Professional Standards and Ethics. Build confidence for your G3 certification exam.
G3 Properties of Fuel Gases
G3 Test Online for Properties of Fuel Gases. Free practice with instant results and feedback.
G3 Exam Flashcards
Quick review for your Gas Technician 3 license
๐ฅWhat is the primary code for gas installation in Ontario?
The primary code is the CSA B149.1 Natural Gas and Propane Installation Code, which is essential for the TSSA G3 test.
START G3 PRACTICE TEST๐ก๏ธWhat is the minimum passing score for the G3 exam?
You must achieve a score of at least 75% to pass the Gas Technician 3 exam administered by TSSA.
REVIEW G3 QUESTIONSโ ๏ธWho oversees gas technician certification in Ontario?
The Technical Standards and Safety Authority (TSSA) oversees all Gas Technician 3 certification and licensing.
TRY G3 MOCK EXAM๐งCan a G3 work unsupervised?
No, a G3 Gas Technician must always work under the direct supervision of a G2 or G1 license holder.
ACCESS G3 STUDY GUIDE๐How long does G3 training take?
A typical Gas Technician 3 course takes approximately 12 weeks or 180 hours of combined theory and practical training.
PRACTICE G3 TEST NOW๐What prerequisites are needed for the G3 course?
Generally, a Grade 10 education or equivalent is required to enroll in an accredited Gas Technician 3 training program.
GET G3 EXAM PREPG3 Exam Study Guide
Our comprehensive G3 Gas Technician study guide breaks down every aspect of the exam. From understanding the tssa g3 test structure to registering for your gas technician 3 license, these tabs provide the essential information you need.
G3 Test Format
Understanding the Gas Technician 3 exam structure is key to success. The TSSA G3 test evaluates your ability to apply safety codes and technical knowledge. The exam is divided into several modules reflecting the Gas Technician 3 course curriculum.
Covers the Occupational Health and Safety Act, TSSA regulations, and hazardous materials.
- Topics: Personal protective equipment, fuel safety regulations.
- Questions: Approx. 20% of exam
Focuses on the proper selection and use of hand and power tools, as well as piping layout.
- Topics: Pipe joining methods, tubing, code requirements.
- Questions: Approx. 25% of exam
Covers the characteristics of natural gas and propane, and the operation of appliances.
- Topics: Combustion principles, appliance lighting, venting.
- Questions: Approx. 30% of exam
Introduction to basic electricity as it applies to gas-fired equipment controls.
- Topics: Using multi-meters, reading schematics, safety.
- Questions: Approx. 15% of exam
Reading and interpreting blueprints and technical drawings for installations.
- Topics: Interpreting plans, specifications, layouts.
- Questions: Approx. 10% of exam
Applying the CSA B149.1 code to practical scenarios is tested throughout.
- Topics: Navigating the code book, finding regulations.
- Questions: Integrated throughout
The G3 exam is open-book, meaning you can use your B149.1 Code Book. Don't memorize every rule; instead, practice quickly navigating the code to find answers. Our g3 practice test helps improve your speed.
G3 Score Calculator
Total Scored Questions
150
105 out of 150 correct
70%
Required to Pass: ~70% (Estimated)
G3 Salary Information
$42,500
Median Annual Salary
How to Become a G3 Gas Technician
The path to becoming a G3 gas technician in Ontario involves specific training and examination steps overseen by the TSSA. From finding a gas technician 3 course to receiving your license, here is the process.
Enroll
Train
Exam
License
G3 Certification Costs
Understanding the financial investment for your Gas Technician 3 certification helps with planning. The Gas Technician 3 course fees vary by institution, but exam and licensing fees are standard.
Expect to invest between $2,500 and $5,000 total for your Gas Technician 3 certification. Many G3 programs offer payment plans or financial aid.

G3 Testing Contacts
Official resources for G3 certification in Ontario
Hi Mark Training
Provider
Services: Courses, Testing
Contact: Check Website
CSA
Group Code Books
Services: B149.1 Code
Contact: Online Store
Ontario
Colleges Public Programs
Services: G3 Programs
Contact: Info Desk
G3 Test Day Checklist
Ready to Pass Your G3 Exam?
Get unlimited access to TSSA-style g3 practice test questions and detailed study guides. Start your journey to becoming a licensed G3 gas technician today.
G3 Renewal Requirements
Frequency
2 Years
Cost
$80
Ensure you renew your G3 license on time to avoid penalties or having to retake the gas technician 3 exam. Most technicians upgrade to G2 before renewal is necessary.
G3 Questions and Answers
About the Author
ASE Master Technician & Automotive Certification Trainer
Universal Technical InstituteTony Garza is an ASE Master Technician certified across all eight automotive service areas, with a Bachelor of Science in Automotive Technology from Universal Technical Institute. He has 22 years of shop experience and 9 years teaching ASE certification prep courses. Tony specializes in engine performance, electrical systems, and transmission diagnostics for certification candidates.