NATE has been involved with the HVAC industry for the past 20 years and prides itself on preparing technicians with rigorous, real life, knowledge-based exams to ensure they are prepared to fix problems connected with HVAC systems. NATE provides technicians with online resources to further ensure that their certifications remains up-to-date and relevant to the needs of their customers. Additionally, NATE technicians are obligated to continue their education by getting re certified every two years. Search for a NATE-certified contractor in your area here.