Previous EPA 608 Type II & III Practice Test 9

EPA 608 NEC 2023

EPA 608 Type II & III Practice Test 10

This final mixed review test combines Type II and Type III topics from across the series: evacuation levels, recovery methods, leak detection, purge units, certification scope, refrigerant transition, and leak rate rules.

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epa 608 practice tests

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Frequently Asked Questions

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The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.

Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.

You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.

Type II & III Exam Tip: When in doubt, start with pressure. Type II runs above atmospheric; Type III runs below it. That single fact unlocks most of the related rules.

25

Questions

25 min

Time

70%

Pass

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EPA 608 Type II & III Practice Test 10 — Question List

Question 1: Which of these is Type II equipment?

Low-pressure (R-123) centrifugal chiller
Low-pressure chiller
Rooftop package unit
None of these

Question 2: Which of these is Type III equipment?

Large low-pressure (R-123) centrifugal chiller
Heat pump
Walk-in cooler
Split system

Question 3: An R-410A system with 180 lbs of charge needs major repair. Using recovery equipment made after November 15, 1993, what evacuation level is required?

15 in. Hg
20 in. Hg
0 in. Hg
10 in. Hg

Question 4: An R-410A system with 250 lbs of charge needs major repair. Using recovery equipment made after November 15, 1993, what evacuation level is required?

10 in. Hg
5 in. Hg
15 in. Hg
25 in. Hg

Question 5: A technician must recover a 70 lb liquid charge from a rooftop unit quickly. Which recovery method fits best?

Push-pull recovery
Vapor recovery
Purge recovery
Hot water recovery

Question 6: Which leak detection method uses a dye visible under UV light?

UV dye
Soap bubble solution
Electronic leak detector
Nitrogen pressure test

Question 7: True or False: Type III chillers use hot water to raise internal pressure above atmospheric before standard leak detection.

True
False
True, but only for small chillers
False, they use nitrogen the same way Type II does

Question 8: What does a purge unit remove from a low-pressure chiller?

Non-condensable gases like air and moisture
Refrigerant
Oil
Compressor heat

Question 9: A leak is found on a walk-in cooler, and refrigerant is escaping outward. What does this tell the technician about the equipment type?

It is Type III, since it runs below atmospheric pressure
It is Type II, since it runs above atmospheric pressure
It could be either
It cannot be determined

Question 10: A leak is found on a chiller, and outside air is entering the system. What does this tell the technician about the equipment type?

It is Type II
It could be either
It cannot be determined
It is Type III, since it runs below atmospheric pressure

Question 11: A technician holds Core, Type I, and Type II certification and is asked to service a hospital's centrifugal chiller. Are they authorized?

Yes, because Type II covers all refrigeration equipment
No, chiller work requires Type III certification specifically
Yes, if they have 10+ years of experience
Yes, because Core certification covers all equipment types

Question 12: Which refrigerants are commonly replacing R-410A under the AIM Act?

R-22 and R-12
R-500 and R-11
Ammonia and CO2 only
R-32 and R-454B

Question 13: True or False: A2L refrigerants require extra precautions for ventilation, leak-detection sensitivity, and hot work compared to nonflammable A1 refrigerants.

False
True, but only above 5 tons
True
False, precautions are identical

Question 14: What substantial leak threshold applies to a large chiller used for comfort cooling a building?

15% per year
35% per year
10% per year
50% per year

Question 15: What leak repair threshold applies to commercial refrigeration, such as supermarket systems?

5% per year
20% per year
15% per year
30% per year

Question 16: True or False: Illegally venting refrigerant has been banned since the 1990s and applies to both Type II and Type III equipment.

True
False
True, but only for Type II
False, the ban started in 2010

Question 17: A technician finds a substantial leak on a 90 lb comfort cooling chiller on June 1. By roughly what date should the repair generally be completed?

June 5
July 1
June 15
August 1

Question 18: A technician is choosing a leak detection method for a rooftop unit with several suspect fittings. Which method lets them apply solution and visually confirm bubbles at the exact leak point?

UV dye
Hot water method
Purge unit check
Soap bubble solution

Question 19: Which piece of equipment is unique to Type III chillers and has no equivalent on typical Type II systems?

Recovery machine
Evacuation gauge
Leak detector
Purge unit

Question 20: A technician needs to service a rooftop unit, Type II, and a chiller, Type III, at the same commercial property in one day. Which statement is TRUE?

One certification covers both jobs
Neither job requires certification
Only the chiller requires certification
Two different certifications are needed: Type II for the rooftop unit and Type III for the chiller

Question 21: True or False: Both the Type II and Type III certification exams require a 70% passing score and are closed-book only.

False
True
True, except Type III allows open-book
False, only Type II is closed-book

Question 22: A technician sees a rising number of purge unit cycles on a chiller and, separately, notices no unusual refrigerant smell in the mechanical room. What does this combination most likely suggest?

A large refrigerant leak pushing gas into the room
The chiller is overcharged
A leak pulling air into the low-pressure chiller, which does not release a smell the way a Type II leak would
The purge unit is broken and adding refrigerant

Question 23: Which recovery method removes refrigerant as a gas and is the standard choice for small to moderate charges?

Vapor recovery
Push-pull recovery
Liquid recovery
Purge recovery

Question 24: True or False: Universal certification requires passing Core, Type I, Type II, and Type III.

False
True
True, but Type I is optional
False, only Type II and Type III are required

Question 25: Summing up the key differences: how do Type II and Type III equipment differ in normal operating pressure, leak behavior, and standard leak testing method?

Type II is below atmospheric with air pulled in and hot water testing; Type III is above atmospheric with refrigerant pushed out and nitrogen testing
Both operate above atmospheric pressure with identical testing methods
Type II is above atmospheric with refrigerant pushed out and nitrogen/positive-pressure testing; Type III is below atmospheric with air pulled in and hot water testing
Both operate below atmospheric pressure with identical testing methods

Study Tip: The EPA 608 exam is closed book. Memorize: recovery is required before opening any refrigerant system. Venting refrigerant is illegal. Know the ODP and GWP values for R-22, R-410A, R-134a, R-32, and R-454B.

EXAM CARD EPA 608

Questions25

Time limit25 min

Pass score70%

RegulationEPA Section 608

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)