Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.
The NATE Air Conditioning (AC) Service Exam, part of the NATE traditional certification pathway, requires passing a 50-question Core exam and a 100-question AC Specialty exam covering installation, service, maintenance, and repair. Key areas include HVAC fundamentals, electrical circuits, refrigeration cycles, airflow, and diagnostics.
NATE AC Service Exam Syllabus & Key Topics: The exam focuses on both theoretical knowledge and practical, field-specific skills: Core Exam (General Knowledge): Safety, tools, fasteners, basic science (heat/pressure), and basic electrical.
AC Specialty Exam (Service Focus): Components: Compressors, condensers, expansion devices, and evaporators. Refrigeration Cycle: Proper charging (superheat/subcooling), leak detection, evacuation, and refrigerant management. Electrical: Motors, troubleshooting circuits, and controls. Airflow & Comfort: Psychrometrics, ductwork, static pressure, and air balancing. Installation & Maintenance: Startup, commissioning, and planned maintenance.
Exam Structure: Format: 100 questions (Specialty) + 50 questions (Core). Passing Score: 70% or higher required on both. Type: Closed-book (except for specific scenarios).
Technicians can also pursue the newer CHP-5 (Certified HVAC Professional) pathway, which breaks down testing into five specific domains: HVAC Fundamentals, Electrical and Controls, Comfort and Airflow, Installation, and Service.
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.