Starting February 15, 2024, the 2020 National Plumbing Code of Canada will be used for the Plumber Level exams and the new Red Seal exams. Codebook excerpts will no longer be used for Red Seal exams; clients will be given the complete 2020 codebooks to reference during the Red Seal and Level exams.

The new Red Seal exams are compliant with the 2020 National Plumbing Code of Canada. The adoption of the complete codebook for the Red Seal examination in the Plumber trade was requested by industry.