Master Your HVAC Certification
Free practice tests for the 2026 NATE & EPA 608 exams. AI-powered analysis, 1,000+ questions, and detailed explanations to help you pass on your first try.
1,000+
Practice Questions
AI-Powered
Analysis
2026
Updated Standards
Free
to Start
Choose Your Certification Path
Select the exam you're preparing for and start practicing with targeted, exam-style questions.
The mandatory first step for Professional NATE certification. 50 questions covering safety, tools, electrical basics, heat transfer, and more.
Master airflow, system charging, and electrical diagnostics for the NATE AC Service & Installation exams.
Conquer reversing valves, defrost controls, and auxiliary heat systems for the Heat Pump specialty exam.
Learn flame sensors, combustion analysis, and ignition sequences for the Gas Heating specialty.
Explore all free practice tests including EPA 608, NATE Core, and more. Compare exam paths and find your starting point.
Why HVAC Exam Master?
Built by HVAC professionals, for HVAC professionals. Every feature is designed to help you study smarter and pass faster.
Our AI identifies your weak spots and adapts question difficulty to maximize learning efficiency.
Comprehensive question bank covering NATE Core, AC, Heat Pump, Gas Heating, and EPA 608 exams.
All content reflects the latest exam standards, including A2L refrigerant transition updates.
Begin practicing immediately with free questions. No account or credit card required.
How It Works
Three simple steps to exam day confidence.
Choose Your Path
Select your certification path — NATE Core, AC, Heat Pump, Gas Heating, or EPA 608.
Practice Daily
Study in short sessions with AI-powered question sets tailored to your weak areas.
Pass Your Exam
Walk into your exam with confidence. Our users consistently outperform the national average.
Ready to Pass Your HVAC Exam?
Join thousands of technicians who used HVAC Exam Master to pass their NATE and EPA 608 exams on the first try.
Frequently Asked Questions
Everything you need to know about HVAC Exam Master