NATE was developed by, and has been supported by the entire HVACR industry for 25 years, and is the leader in developing and recognizing professional HVACR technicians. The NATE certification program is designed to help HVACR employers hire, train and develop the best technicians possible by providing a clear path to professional development and certification. The NATE certification exams are designed for professional technicians with at least two years of experience, and consist of questions created by industry experts from across the country.