TSSA G2 Exam Prep Gas Fitter
Ontario G.2 practice: 720 original questions for TSSA gas technicians.
About TSSA G2 Exam Prep Gas Fitter
DISCLAIMER — THIS APP DOES NOT REPRESENT A GOVERNMENT ENTITY
TSSA G2 Exam Prep Gas Fitter is an independent study tool from DEL Software Development. It is NOT created, sponsored, affiliated with or authorized by the Technical Standards and Safety Authority (TSSA), CSA Group, or the Government of Ontario. This app does not book exams, collect TSSA fees, or issue a G.2 certificate.
Official sources for ALL government information referenced in this app:
TSSA (Ontario designated authority)
• Fuels industry professional: https://www.tssa.org/fuels-industry-professional
• TSSA Client Portal (exam booking): https://www.tssa.org/tssa-portals
• Gas Technician / Oil Burner policies (Sept 2025): https://www.tssa.org/sites/default/files/2025-09/FS-Gas%20Technician%20or%20Oil%20Burner%20Technician%20Policies%20and%20Procedures-2025.pdf
• Gaseous Fuels CAD FS-279-26 (adopts CSA B149.1:25): https://www.tssa.org/sites/default/files/2026-04/Gaseous-Fuels-CAD-Amendment-Fuels-CAD-FS-279-26.pdf
Government of Ontario
• Technical Standards and Safety Act, 2000: https://www.ontario.ca/laws/statute/00t16
• O. Reg. 215/01 — Fuel Industry Certificates: https://www.ontario.ca/laws/regulation/010215
• O. Reg. 212/01 — Gaseous Fuels: https://www.ontario.ca/laws/regulation/010212
• O. Reg. 223/01 — Codes and Standards Adopted by Reference: https://www.ontario.ca/laws/regulation/010223
CSA Group (codes used on the official exam; this app does not bundle them)
• CSA B149.1:25 Natural gas and propane installation code: https://www.csagroup.org/store/product/CSA_B149.1:25_OT/
• CSA B149.2:25 Propane storage and handling code: https://www.csagroup.org/store/product/CSA_B149.2:25_OT/
What’s in the app
• 8 modules covering TSSA G.2 curriculum 10–24: piping, electricity, controls, building as a system, appliances, meters, heating and venting
• 720 original multiple-choice questions (4 options)
• G2 Full Exam: 100 questions / 210 minutes (training timer)
• Codes, Piping & Venting: 40 questions / 60 minutes
• 7 free questions per module
• Offline study guide (PDF)
• Original diagrams on selected questions
Training score
Correct +1, wrong or blank 0. Fuels written exams need 75% and allow up to 3.5 hours. This app does not pass or fail you. Questions are original and do not reproduce official papers or CSA codes. The official exam is booked through TSSA after accredited training. Practical skills are not simulated.
