EPA 608 Practice Test

Free practice for the EPA Section 608 Technician Certification Exam. Tap an answer to see if you are right, why, and which code section to look up.

Questions are checked against public sources. They are not yet reviewed by a licensed professional.

About the exam

Code edition: 40 CFR 82 Subpart F

Core

questions (25 scored)

30 min

time

70%

to pass

Closed book

Type I (small appliances)

questions (25 scored)

30 min

time

70%

to pass

Closed book

Type II (high-pressure)

questions (25 scored)

30 min

time

70%

to pass

Closed book

Type III (low-pressure)

questions (25 scored)

30 min

time

70%

to pass

Closed book

Each part is timed and scored separately.

Topic weights are provisional until the candidate bulletin is reviewed.

Free practice questions

Question 1

In which layer of the atmosphere is the ozone that shields the Earth from ultraviolet radiation?

Question 2

In what year was the Montreal Protocol, the international treaty to phase out ozone-depleting substances, signed?

Question 3

Which activity requires EPA Section 608 certification?

Question 4

R-410A is a blend of which two refrigerants?

Question 5

In what state does refrigerant normally leave the evaporator?

Question 6

What does it mean to recover refrigerant?

Question 7

When recovering from a large system, why is liquid recovered before vapor when possible?

Question 8

What is the main purpose of evacuating a system with a vacuum pump before charging?

Question 9

Why is a large refrigerant leak in a basement or other enclosed space dangerous?

Question 10

What colors identify a refillable refrigerant recovery cylinder?

Question 11

What does the ASHRAE 34 safety class A2L mean?

Question 12

Under Section 608, what is a small appliance?

Question 13

Using recovery equipment made after November 15, 1993, how much of a small appliance's charge must be recovered when the compressor runs?

Question 14

Where is refrigerant usually accessed on a small appliance that has no service valves?

Question 15

Isobutane (R-600a), common in new household refrigerators, has which safety class?

Question 16

Who is responsible for making sure refrigerant is removed from a small appliance before it is scrapped?

Question 17

Which of these refrigerants is used in most new household refrigerators sold in the United States today?

Question 18

Which visible sign most often points to a refrigerant leak on a split system?

Question 19

The leak repair rules in 40 CFR 82.157 apply to which appliances?

Question 20

Using recovery equipment made after November 15, 1993, to what level must a high-pressure appliance with less than 200 lb of refrigerant be evacuated before a major repair?

Practice by topic

Ozone depletion & climate

Questions: 12

Clean Air Act & Montreal Protocol

Questions: 13

Section 608 regulations

Questions: 19 · Often missed

Substitute refrigerants & oils

Questions: 14 · Often missed

Refrigeration cycle, gauges & leaks

Questions: 14

Recover, recycle, reclaim

Questions: 12 · Often missed

Recovery techniques

Questions: 10

Evacuation & dehydration

A2L & A3 refrigerants

Questions: 12 · Often missed

Small appliances: scope

Questions: 10

Type I recovery requirements

Questions: 14 · Often missed

Type I recovery techniques

Questions: 16 · Often missed

Hydrocarbons & Type I safety

Questions: 14 · Often missed

Small appliance disposal

Questions: 8

Small appliance service

Questions: 8

Type II leak detection & inspections

Questions: 16

Leak repair rules (82.157)

Questions: 25 · Often missed

Type II recovery & evacuation levels

Questions: 23 · Often missed

Type II evacuation & charging

Questions: 16

Type II A2L systems & safety

Questions: 16 · Often missed

High-pressure systems & components

Questions: 14

Low-pressure chillers

Questions: 12

Type III leak testing

Questions: 13 · Often missed

Type III leak repair rules

Questions: 10

Type III recovery

Questions: 21 · Often missed

Purge units

Questions: 10

Type III evacuation & charging

Questions: 12

Type III safety & ASHRAE 15

Questions: 12

Exam rules

Four sections of 25 multiple-choice questions: Core, Type I, Type II and Type III. Universal certification means passing all four.

You need 70% (18 of 25) on each section. Core must be passed together with at least one type to be certified.

Type II, Type III and Universal exams are closed book and proctored. A mail-in or online Type I exam needs 84%.

Certification does not expire.

Section time limits vary by certifying organization; practice timing here is an estimate.

Frequently asked questions

How is the EPA Section 608 Technician Certification Exam structured?

It has Core (25 questions, 30 min, 70%) and Type I (small appliances) (25 questions, 30 min, 70%) and Type II (high-pressure) (25 questions, 30 min, 70%) and Type III (low-pressure) (25 questions, 30 min, 70%). You need to pass each part.

Is the exam open book?

No. It is closed book, so practice until you know the rules without looking them up.

Can I take the exam in Spanish?

Some exams are offered in Spanish; check your candidate bulletin. Every question here is available in Spanish too.

Are these the real exam questions?

No. SkillPermit Pro is an independent study tool. Questions are written in our own words; they are not taken from the exam and are not endorsed by any licensing agency or testing vendor.

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Not affiliated with any state agency, TDLR, PSI, NFPA, EPA or CSLB. NEC® and National Electrical Code® are registered trademarks of NFPA.

Practice questions are written in our own words and cite code sections by number. Always study from your own copy of the code and the official candidate bulletin.

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