There is no single NATE certification to be studied for and obtained; a HVAC professional can choose between 22 different tests to obtain certification within a specialized HVAC subject. These subjects include air conditioning installation and service, air distribution installation and service, and air-to-air heat pump installation and service.
To become certified as a NATE HVAC installer, mechanic or senior technician, a candidate must pass the CORE test and one specialty exam. The CORE skills test covers subjects such as areas of safety, HVAC tools, heat transfer system and electrical systems.
All NATE certifications are valid for five years, with recertification available upon the completion of 60 hours of continuing education within the five-year period. Senior technicians certified by NATE must complete the CORE test and two specialty subject exams.