Numerous associations, institutions, and organizations offer accreditation and certification across the many sectors of the HVACR industry. For technicians, certification classifies a worker as a top-notch performer, and also serves as a confidence builder for customers, contractors, and others across the industry. The same justification holds true for accredited HVACR associations, schools, and training programs. Each credential provides the recipient with international credibility, status, and legitimacy in their specialty.