Previous EPA 608 Core Exam Practice Test 12 Next EPA 608 Core Exam Practice Test 14

EPA 608 NEC 2023

EPA 608 Core Exam Practice Test 13

Free EPA 608 Practice Test ( CORE Exam)-13

TOPICS COVERED

epa 608 practice tests

How this test works

Read each question carefully

Look for absolute words like always / never — they often distinguish the right answer.

Manage your time

You have 20 min for 13 questions. Skip tough ones and come back.

Progress is auto-saved

Your answers are saved locally — a page refresh won't lose your work.

Review your answers

After submitting you'll see every explanation and your NEC references.

Frequently Asked Questions

Yes — completely free with no account needed.

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.

How to Use This Practice Test

This EPA 608 Core Exam Practice Test 13 has 13 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.

Tip: The EPA 608 exam is NOT open book — memorize refrigerant ODP/GWP values and recovery rules before the exam.

Topics covered: Refrigerant regulations, recovery procedures, leak detection, and refrigerant properties.
Passing score: 70% required on each section. Universal certification requires passing all four sections.
Questions: 13 multiple-choice, one correct answer each

13

Questions

20 min

Time

70%

Pass

Timer starts immediately. Progress is auto-saved.

EPA 608 Core Exam Practice Test 13 — Question List

Question 1: Since …………….. knowingly venting any ozone sunstones is the violation of clean air act

November 15, 1995
December 31, 1995
July 15, 1994
November 14, 1994

Question 2: Why HFC is not having ozone depletion potential (ODP)?

It does not contain carbon
It does not contain chlorine
Its boiling point is not same as CFC
It does not travel up to stratosphere

Question 3: The inlet and outlet pressures of refrigerant is almost same in ………………..

Condenser and evaporator
Compressor and evaporator
Expansion valve and compressor
Condenser and compressor

Question 4: The tubing line connecting evaporator to the intake of compressor is called as ……….

Suction line
Discharge line
Liquid line
Vapor line

Question 5: The refrigerant temperature after the condenser compared to the refrigerant temperature after expansion valve in a vapor compression refrigerant cycle is …………….

Higher
Lower
Same
Reduced to half

Question 6: Ozone gas is located in which of the following earth’s atmosphere?

Stratosphere
Troposphere
Both Stratosphere and troposphere
None

Question 7: What is the color identification of low pressure gauge in manifold gauge set?

Blue
Red
White
Yellow

Question 8: Which of the following should be used to leak check an R-134a refrigeration system?

Pressurised nitrogen
Dry air
Helium
Compressed hydrogen

Question 9: What is the outcome when chlorine atom meets with ozone molecule?

Chlorine monoxide
Carbon dioxide
Chlorine dioxide
Chlorine + oxygen

Question 10: The blended refrigerants should be generally charged ……

as liquid
as vapor
at high temperature
at low pressure

Question 11: A refrigerant in refrigeration system releases heat when ………………….

It is compressed
It evaporates
It condenses
It vaporizes

Question 12: Before opening / servicing a vapor compressor refrigeration system …………

The refrigerant must be released to atmosphere
The refrigerant must be recovered using approved techniques
The refrigerant may be vented if it is HFC
The refrigeration system must be depressurized

Question 13: A compound gauge is connected to …………….

Low side of the system
High side of the system
recovery machine
vacuum pump for evacuation

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

Questions13

Time limit20 min

Pass score70%

Code editionNEC 2023

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)