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EPA 608 Mini-Quiz: 10-Question Diagnostic to Find Your Weak Sections

10 questions covering all four certification sections. Find your weak areas in under 5 minutes — then drill those sections with full 25-question practice tests.

EPA 608 Mini-Quiz — 10 questions covering all four certification sections. Use this to identify which sections need more study before you attempt a full 25-question section test. 2-3 questions per section; results show your score by section. Complete in under 5 minutes.

How to Use This Tool

Take the mini-quiz before your study session to identify weaknesses. Take it again after studying to measure progress. When you score 80%+ on the mini-quiz consistently, move to the full timed 25-question section practice tests as your readiness benchmark.

This Is a Diagnostic Tool — Not a Readiness Indicator

Scoring 8/10 on the mini-quiz does not mean you're ready for the exam. The real exam is 25 questions per section under timed conditions. The mini-quiz identifies which areas to study; full section practice tests validate readiness.

EPA 608 Mini-Quiz: 10 Questions

Core — Q1
What was the first date when CFC and HCFC refrigerants were prohibited from intentional venting?
A) January 1, 1990   B) July 1, 1992   C) November 15, 1995   D) January 1, 2000
Answer: B — July 1, 1992 — The venting prohibition for CFC and HCFC refrigerants took effect on July 1, 1992 under Section 608 of the Clean Air Act.
Core — Q2
What is the current civil penalty for knowingly venting regulated refrigerants?
A) $5,000 per violation   B) $37,500 per day   C) Exceeds $44,539 per day per violation   D) $200,000 per year
Answer: C — Exceeds $44,539 per day per violation — Current EPA civil penalties for knowing venting violations exceed $44,539 per day per violation (adjusted for inflation under the Federal Civil Penalties Inflation Adjustment Act).
Core — Q3
The de minimis exemption under Section 608 exempts refrigerant releases of:
A) 0.1 ounce or less   B) 1 ounce or less   C) 5 lbs or less   D) 0.5 lb or less
Answer: A — 0.1 ounce or less — The de minimis exemption covers incidental releases of 0.1 ounce or less per occurrence during normal maintenance and repair operations.
Type I — Q4
What manufactured charge limit defines a small appliance under Type I?
A) 10 lbs or less   B) 5 lbs or less   C) 2 lbs or less   D) 50 lbs or less
Answer: B — 5 lbs or less — Under EPA Section 608, small appliances are defined as equipment that is fully manufactured, charged, and hermetically sealed in a factory with 5 lbs or less of refrigerant.
Type I — Q5
Recovery threshold when the Type I appliance compressor is NOT operating:
A) 70%   B) 80%   C) 90%   D) 95%
Answer: B — 80% — When the compressor of a small appliance is not operating, technicians must recover 80% of the refrigerant before opening the system or disposing of the appliance.
Type II — Q6
Comfort cooling equipment with 50+ lbs of refrigerant charge — mandatory leak repair threshold:
A) 5%   B) 10%   C) 20%   D) 35%
Answer: B — 10% — For comfort cooling equipment with 50 lbs or more of refrigerant, the mandatory leak repair threshold is 10% annual leak rate under EPA Section 608 regulations.
Type II — Q7
Recovery vacuum required for a system with 250 lbs of refrigerant (post-1993 equipment):
A) 10 inches Hg   B) 15 inches Hg   C) 25 mm Hg absolute   D) 500 microns
Answer: B — 15 inches Hg — For high-pressure systems with more than 200 lbs of refrigerant manufactured after November 15, 1993, the recovery standard requires evacuation to 15 inches Hg vacuum.
Type II — Q8
Annual leak rate threshold for commercial refrigeration (50+ lbs):
A) 10%   B) 15%   C) 20%   D) 35%
Answer: C — 20% — For commercial refrigeration equipment with 50 lbs or more of refrigerant, the mandatory leak repair threshold is 20% annual leak rate — higher than the 10% threshold for comfort cooling equipment.
Type III — Q9
Type III low-pressure chiller recovery standard:
A) 10 inches Hg   B) 15 inches Hg   C) 25 mm Hg absolute   D) 500 microns
Answer: C — 25 mm Hg absolute — Low-pressure systems (Type III) operate below atmospheric pressure, so recovery standards are expressed in absolute pressure: 25 mm Hg absolute (approximately 29 inches Hg vacuum).
Type III — Q10
Which refrigerant is a Type III low-pressure refrigerant?
A) R-12   B) R-22   C) R-123   D) R-410A
Answer: C — R-123 — R-123 is a low-pressure refrigerant used in centrifugal chillers (Type III equipment). R-12 and R-22 are medium-pressure refrigerants; R-410A is a high-pressure refrigerant.

After the Mini-Quiz: What Your Score Means

8–10 Correct (80%+)

Strong baseline knowledge. Move to full 25-question timed section practice tests to validate readiness under exam pressure.

6–7 Correct (60–70%)

Close to passing but gaps remain. Review the sections where you missed questions. Use section-specific study guides before retaking the mini-quiz.

5 or Fewer Correct (Under 50%)

Significant preparation needed. Start with the Core section study guide, then work through type sections in order. Return to the mini-quiz after completing each section's study guide.

Full Section Practice Tests

Mini-quiz results by section — go directly to the section where you need more work:

Each section test: 25 questions, timed, with immediate answer explanations.

Drill Your Weak Sections

After the diagnostic, move to full section practice tests to build real exam readiness.

Review the numbers you missed with the free study cheat sheet.

608 Core Section Practice Test 608 Study Cheat Sheet