While completing the Apprenticeship: Plumbing, HVAC/Refrigeration Certificate of Achievement, apprentices will be paid while receiving on-the-job training, starting out making a percentage of the Union journey-level wage and receiving pay increases at the end of each six-month training period. Completion of the program takes a minimum of five years. The years are broken down into ten (10) periods. During this time, you will receive on-the-job training. Students will also be required to attend related and supplemental instructional classes in the evenings, two nights per week (with summers off).