EPA 608 Certification Practice Score Estimator
Estimate your EPA 608 certification exam score across all four sections (Core, Type I, Type II, Type III). A minimum score of 70% is required to pass each section. Enter the number of questions you answered correctly out of the total questions per section to see your estimated score and pass/fail status.
Core Section (General Knowledge)
25 questions total — covers refrigerants, safety, environmental impact, and regulations.
Type I — Small Appliances
25 questions total — covers appliances with ≤5 lbs of refrigerant (e.g., window ACs, refrigerators).
Type II — High-Pressure Systems
25 questions total — covers systems using R-22, R-410A, R-134a, etc.
Type III — Low-Pressure Systems
25 questions total — covers systems using R-11, R-113, R-123, etc.
Formulas Used
Section Score (%):
Score (%) = (Correct Answers ÷ Total Questions) × 100
Composite Score (%):
Composite (%) = (Sum of All Correct Answers ÷ Sum of All Total Questions) × 100
Minimum Correct Answers to Pass a Section:
Min Correct = ⌈0.70 × Total Questions⌉ (ceiling function — rounds up to nearest whole number)
For a standard 25-question section: ⌈0.70 × 25⌉ = ⌈17.5⌉ = 18 correct answers required.
Assumptions & References
- Pass threshold is 70% per section, as required by EPA 40 CFR Part 82, Subpart F (Section 608 of the Clean Air Act).
- Each section is scored independently — you must pass each required section separately; a high score in one section does not compensate for a failing score in another.
- Standard EPA 608 exams contain 25 questions per section (Core, Type I, Type II, Type III), though some approved testing organizations may vary slightly.
- Universal Certification requires passing Core plus all three Type sections (I, II, and III).
- This tool is a practice estimator only and does not represent an official EPA exam score. Actual exam results may differ.
- Exams must be administered by an EPA-approved certifying organization. There is no EPA-administered exam; third-party providers include ESCO Group, Mainstream Engineering, and others.
- Certification is required under Section 608 of the Clean Air Act for any technician who purchases or handles refrigerants in HVAC/R systems.
- Reference: EPA Section 608 Technician Certification