200+ Free NATE HVAC Practice Questions
Pass your NATE HVAC Certification exam on the first try — instant access, no signup required.
Choose Your Practice Session
Select how many questions you want to practice
Questions by Category
Key Facts: NATE HVAC Exam
65-75%
Pass Rate
NATE data
70%
Passing Score
All exams
2 years
Certification Valid
Recertification required
16 hrs
CEH Required
Per 2-year period
$150-$250
Exam Fee
Per exam
5
CHP-5 Domains
Or Core + Specialty
The NATE HVAC Certification has a 65-75% pass rate for well-prepared candidates. Exams require 70% to pass and cover 5 domains: Fundamentals (safety, tools, refrigeration cycle), Electrical (circuits, motors, controls), Comfort/Airflow (psychrometrics, ductwork), Installation (equipment setup, charging), and Service (diagnostics, troubleshooting). CHP-5 pathway uses five 30-question exams; Traditional pathway uses 50-question Core + 100-question Specialty. EPA Section 608 certification is typically required as a prerequisite.
About the NATE HVAC Exam
Industry-leading HVAC technician certification covering 5 CHP-5 domains: HVAC Fundamentals, Electrical and Controls, Comfort and Airflow, Installation, and Service. Required by many employers and jurisdictions for HVAC professionals.
Questions
50 scored questions
Time Limit
1-1.5 hours per exam
Passing Score
70%
Exam Fee
$150-$250 per exam (North American Technician Excellence (NATE))
NATE HVAC Exam Content Outline
HVAC Fundamentals
Safety and PPE, tools and equipment, heat transfer, refrigeration cycle basics, refrigerants, and EPA 608 regulations
Electrical and Controls
Electrical basics, circuits, motors, capacitors, contactors, relays, transformers, wiring diagrams, and control systems
Comfort and Airflow
Psychrometrics, airflow measurement, CFM calculations, ductwork design, static pressure, humidity control, and load calculations
Installation
Equipment installation, line set piping, brazing, nitrogen purge, system evacuation, refrigerant charging, and startup procedures
Service
Systematic troubleshooting, diagnostic procedures, maintenance, component testing, superheat/subcooling, and repair procedures
How to Pass the NATE HVAC Exam
What You Need to Know
- Passing score: 70%
- Exam length: 50 questions
- Time limit: 1-1.5 hours per exam
- Exam fee: $150-$250 per exam
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
NATE HVAC Study Tips from Top Performers
Frequently Asked Questions
What are the two pathways to NATE HVAC certification?
NATE offers two certification pathways: (1) CHP-5 (Certified HVAC Professional): Five 30-question exams covering Fundamentals, Electrical, Comfort/Airflow, Installation, and Service. Pass all five to earn certification. (2) Traditional: 50-question Core exam plus 100-question Specialty exam (Air Conditioning, Heat Pumps, Gas Furnaces, etc.). Both pathways require 70% to pass each exam.
How hard is the NATE HVAC certification exam?
The NATE exam is considered moderately challenging with a 65-75% pass rate for candidates who have completed HVAC training and study the material thoroughly. The exam tests both theory and practical application. Technicians with 1-2 years of field experience who study for 40-60 hours typically pass on their first attempt.
What is the difference between CHP-5 and Traditional pathways?
CHP-5 breaks certification into five smaller exams (30 questions each) that can be taken separately, making it more manageable for entry-level technicians. The Traditional pathway combines a Core exam (50 questions) with a Specialty exam (100 questions) for more comprehensive testing in specific areas like air conditioning or heat pumps.
Do I need EPA 608 certification before taking NATE exams?
While not always required by NATE, EPA Section 608 certification is legally required to handle refrigerants and is a de facto prerequisite for HVAC work. Many employers require both NATE and EPA 608 certifications. The NATE exam does include questions on EPA regulations and refrigerant handling.
How long is NATE certification valid?
NATE certification is valid for 2 years. To maintain certification, technicians must complete 16 hours of continuing education (CEHs) during each 2-year period or retake the exam. CEH credits can be earned through manufacturer training, industry seminars, approved courses, and other professional development activities.
What topics are covered on the NATE HVAC exam?
The exam covers 5 domains: (1) Fundamentals - safety, tools, heat transfer, refrigeration cycle; (2) Electrical - circuits, motors, controls, wiring; (3) Comfort/Airflow - psychrometrics, ductwork, CFM; (4) Installation - equipment setup, brazing, charging; (5) Service - troubleshooting, diagnostics, maintenance.