Gas Technician I HVAC 9042 Email to a Friend Our Gas Technician I course complies with the theoretical and practical Technical Standards and Safety Authority (TSSA) training curriculum for the Gas Technician I certification and includes modules 26 through 32. It prepares you to write our EX 03 TSSA Gas Technician I Exam. Prerequisite(s) You must have 4,000 hours of relevant experience as a gas technician II with 500 supervised hours working on inputs over 400,000 BTUH. You must present proof in the form of detailed documentation. Contact Information 416-415-5000, ext. 4861 firstname.lastname@example.org Course Section(s) Available Class dates and registration for the upcoming year (September 2017 to August 2018) will be available on this website in early July 2017. Please visit this page again at that time. Some courses require you to purchase a textbook. The cost of the textbook is not included in the course fee unless otherwise indicated. If there is a textbook assigned for this course, it will be listed on the bookstore website.