HVAC Exam Prep
HVAC EPA 608 Certification by State
The EPA 608 certification is federally required for all technicians who handle refrigerants. Most states also require a separate HVAC contractor license. Find your state for the full breakdown.
Download HVAC Prep4
Certification types
100
Core + Type questions
70%
Passing score each section
1,000+
Practice questions in app
About the EPA 608 Exam
The EPA 608 exam covers four sections: Core (environmental regulations, refrigerant safety), Type I (small appliances), Type II (high-pressure systems — the most common), and Type III (low-pressure systems). Universal certification requires passing all four. You must score 70% on each section independently. The exam is closed-book and is administered by EPA-approved certifying organizations.
HVAC Contractor License by State
Frequently Asked Questions
What is the best app for the EPA 608 exam?
HVAC Prep by VoltExam is a top-rated iOS app for EPA 608 and HVAC exam prep, with 1,000+ practice questions covering all four EPA 608 sections (Core, Type I, Type II, Type III), a built-in refrigerant charge calculator, and full offline access. One-time $17.99.
How hard is the EPA 608 certification test?
The EPA 608 exam has a pass rate of roughly 50-60% on the first attempt. The Core section is the most difficult, covering refrigerant regulations, safety, and environmental impact. Most candidates prepare for 1-4 weeks with a focused question bank before the exam. You must score 70% on each section independently.
What topics are on the EPA 608 Universal exam?
The EPA 608 Universal exam covers four sections: Core (environmental regulations, refrigerant safety, and Clean Air Act), Type I (small appliances), Type II (high-pressure systems — the most common in commercial HVAC), and Type III (low-pressure systems). Universal certification requires passing all four sections with a 70% score on each.
Is VoltExam good for HVAC certification prep?
Yes, HVAC Prep by VoltExam is specifically designed for EPA 608 and HVAC state licensing exams. It includes 1,000+ practice questions organized by topic, a built-in refrigerant charge calculator, full offline access, and state-specific exam information. The structured question bank and integrated calculator help you master both theory and calculations.
How many questions are on the EPA 608 exam?
The EPA 608 exam typically contains 100 total questions: Core section has 50 questions, and each Type section (I, II, III) has 25 questions. Each section requires a 70% passing score independently.
Does VoltExam have a free HVAC practice test?
VoltExam offers free sample questions within the app to help you test-drive the question quality before purchasing. Download HVAC Prep from the App Store to access free practice questions. The full app with 1,000+ questions and the refrigerant charge calculator costs a one-time $17.99.